Wednesday, May 1, 2024

Can You Dye Your Hair While Pregnant?

can i color my hair while pregnant

The most common active chemicals used in hair dye include ammonia, peroxide and paraphenylenediamine (PPD). Ammonia raises the pH level of the hair so color change can occur, peroxide takes away the natural color in hair produced by melanin and PPD applies the pigment. Almost all hair dyes—even boxes labeled as “natural”—contain these chemicals. When you’re pregnant, it’s common to second guess the safety of many of your usual activities.

Can you bleach your hair while pregnant?

Substances like alcohol and certain prescription drugs can end up in your breast milk. Tell your doctor about any medications you take if you’re planning on breastfeeding your baby. Even smells you may have tolerated before could now send you running away gagging. Most hair dyes are a bit pungent, which might not mesh well with your newly delicate nose.

Can You Highlight or Balayage Your Hair During Pregnancy?

Of course, there's no harm in putting off your color treatments until after you've given birth. "If you really, really want to have an abundance of caution, then my recommendation for my pregnant patients is always just to wait," says Dr. Hack. "In the event that something happens, you don't want to end up in a situation where you're blaming yourself, even if it was something that's out of your control." Although it’s important to do your research, it is always most important to get the opinions of your OB-GYN, midwife, gynecologist or trusted healthcare provider. They are the experts who will know the details of your personal healthcare situation the best, so you should defer to their opinions and recommendations.

Will using hair dye increase the chance of pregnancy loss?

can i color my hair while pregnant

It offers current information and opinions related to women's health. It does not explain all of the proper treatments or methods of care. Getting hair dye in your eyes can cause injuries and blindness, so it's best to avoid dyeing your eyebrows. Your skin can absorb the chemicals, which can circulate through your bloodstream and reach your baby. For a safer alternative, try techniques where color is painted directly on to the hair shaft — highlights, lowlights, frosting and streaking, for example. Pulling hair through a cap and then applying color is a less common method but equally as safe, since the cap covers the scalp.

can i color my hair while pregnant

The experts I’ve spoken to agree that mums-to-be shouldn’t colour their hair during their first 12 weeks of pregnancy (the risk of chemical substances harming the baby becomes lower after this). However, a skin test is essential before having your colour done, even if you’ve had one done before. “Pregnancy changes your sensitivity, potentially making you more susceptible to allergic reactions,” organic hair colour expert Karine Jackson  explains. Top hairdresser Paul Edmonds  also notes that hormone changes that occur during pregnancy, can affect the porosity of hair and its strength, so extra care should be taken to protect its integrity.

Plus, only a small amount of these chemicals are actually absorbed into the scalp. Thankfully, there is a range of safe coloring options that pregnant women can consider after consulting with their doctor based on their comfort level, from permanent color to shampoo-to-shampoo root touch-ups. There are different ways to color your hair, but certain methods minimize contact between dye and your scalp. If you use an all-over color or touch up your roots, this is called a single-process coloring treatment.

He also advises holding off on coloring your hair during the first trimester if you’re unsure, as you’d want to steer clear of any harsh chemicals. The American Pregnancy Association agrees, stating that it’s best to wait until your second trimester to chemically treat your hair in any way. And because “bleach is one of the more aggressive hair color [products],” Colombini suggests you may want to consider skipping it until your little bundle arrives. There is no evidence to suggest that any hair treatment, including hair dye, is harmful during pregnancy.

We Clear the Air on Pregnant Women Who Dye Their Hair - Allure

We Clear the Air on Pregnant Women Who Dye Their Hair.

Posted: Fri, 13 Apr 2012 07:00:00 GMT [source]

Still, while it’s generally considered safe to dye your hair during pregnancy, Reavey recommends avoiding it until the second trimester. “The first 13 weeks of pregnancy are critical for baby’s growth, so I’d err on the side of caution and avoid using hair dyes during this time,” she explains. Or, if you’re looking for a new hairstyle, but hesitant about completely dyeing your hair during pregnancy, Reavey recommends opting for highlights. “This will change the color and dynamic of your hair, without directly putting color on the scalp,” she says. Ross agrees, noting that treatments like highlights, streaking and frosting have little contact with the scalp and can be safer alternatives during all trimesters of pregnancy.

When you're pregnant, you want to minimize your exposure to any toxic ingredients. Many experts believe the chemicals in semipermanent and permanent dyes are not highly toxic and are safe during pregnancy. If a person has any questions or worries about hair treatments during pregnancy, they should speak with a healthcare professional. There is no evidence to suggest that bleaching the hair could be harmful during pregnancy. Mother To Baby states that no hair treatments are currently known to be dangerous to a fetus.

While many women report that their hair is shinier, thicker, and grows faster (due to the extra folic acid they’re taking), other women experience the opposite. If you aren’t getting the proper prenatal vitamins and minerals you need, your hair can become dry, brittle, and more prone to breakage. Adding hair dye or other chemical treatments to unhealthy hair can damage it. Read on to learn more about the safety of using hair dye while pregnant, hair dye alternatives, and the safety of other hair treatments during pregnancy.

However, when it comes to hair dye, only a small amount of chemicals get absorbed through the scalp. This means that the risk of those chemicals entering your bloodstream and reaching your baby is minimal. For this reason, the American College of Obstetricians and Gynecologists states that hair coloring during pregnancy is not toxic. If you're in a high-risk pregnancy or feel uneasy about interacting with chemicals during pregnancy, consider plant-based dyes as an alternative. Consult a healthcare provider on the safest plan for you and your baby. With a little research, you may discover a number of options for a new color or style.

11 Pregnancy-Safe Hair Dye Brands You Can Use At Home - Romper

11 Pregnancy-Safe Hair Dye Brands You Can Use At Home.

Posted: Thu, 29 Jun 2017 07:00:00 GMT [source]

You can also try a color-depositing conditioner, like those from brands such as oVertone, which dilutes color in a thick conditioner form, or opt for a demi-permanent formula without ammonia. Of course, you can also skip services altogether and treat yourself to a much-deserved refresh after baby is born. You could try a safer alternative such as a semi-permanent pure vegetable dye, like henna. Talk to your healthcare provider and, if possible, meet with an industrial hygienist or occupational medicine physician to talk about safe work practices. According to experts, a small amount (if any) of the chemicals from the dye would make it into the bloodstream.

“They develop in foils which protects the scalp,” she explains, to keep the risk of irritation to a minimum. Every piece of content at Flo Health adheres to the highest editorial standards for language, style, and medical accuracy. To learn what we do to deliver the best health and lifestyle insights to you, check out our content review principles. Hair dye can lead to more irritation and breaking of the skin, ultimately making the skin condition worse. The NHS advises performing a strand test before applying the dye to the rest of the hair. Helen Reavey is the founder and creative director of hair wellness brand Act + Acre.

Additionally, a person should follow certain precautions to limit their exposure to hair dye chemicals. Permanent dyes may contain stronger chemicals than semipermanent or temporary dyes. However, there is no evidence to suggest that the permanency of a hair dye makes it more harmful to a fetus. If you’d rather play it safe, there are some things you can do to make your current color last as long as possible.

The data, published in 2022, suggests a relationship, but much more research needs to happen to define that relationship. In other words, scientists can’t say, based on the available information, that using hair straightening products actually increases your cancer risk. If it does, though, that suggests that the chemicals being applied to the scalp when straightening hair can cause hormonal changes. Just like we don’t have a lot of research on how hair dye impacts fetal development, we have very little real data about the impact (if any) hair dye has on breast milk.

80+ Layered Haircuts for Long Hair: Get Ready to be Obsessed!

layers for thick long hair

Adding feathered, chunky layers to your long hair will look great if you have medium to thick textured hair. This is a perfect way to keep length while creating movement. Layered hairstyles add a lot to the flow of hair, creating a beautiful cascade of curls. Thick hair falls into place so easily when it’s cut into long, loose layers. Once hair has been layered, you can create waves and curls with a curling iron, or wear it stick straight using a flat iron.

Choppy Layers with Highlights

“It’s perfect for ladies who don’t have time to blow dry, iron, or curl extensively,” says Rohit, a stylist from India. Women over 40 add some sass to your style with long layers and messy waves. Long layers will make your hair lighter and easier to manage. If you want more volume, ask your stylist to ensure the layers are short enough in the crown area. Remember that for full and smoother waves, this shape must be curled with an iron and will take some time to achieve.

Middle Part with Beachy Waves

Growing out natural curls demands patience but the effort is worth it once a long length is achieved. Instead of trimming the strands straight across ask the hairstylist for a Deva haircut with each curl falling flawlessly around the face. In the era of bold hair colors, opt for a more natural look. Paint the long tresses in a reddish burgundy tinge and add curls before brushing them through with fingers. Pin back the front in a puff with the messy curls side-tousled on one shoulder for a carefree appeal. Considering the lazy ones, spice up a long mane by layering it along the length and incorporating warm platinum blonde highlights on a sandy blonde base.

Tousled Shag for Thick Hair

We love the wearability of curtain bangs as they bring softness to the face and can be styled so many ways. We love the way Jourdan Dunn's short hair has been tapered to give it more shape. To get the look, ask your hairstylist for some longer invisible layers that sit above the jawline. Style with a few spritzes of texturizing spray for effortless waves. Cut your locks into a V-shape with various layers for a natural boost and have your strands cascade down your back.

Long Layered Haircuts for Any Face Shape - InStyle

Long Layered Haircuts for Any Face Shape.

Posted: Sun, 21 Aug 2022 07:00:00 GMT [source]

Finish off with a light mist of hairspray to hold the style in place. Try a layered cut for your thick hair with a voluminous shag with peekaboo highlights. A modern shag has soft-moving layers that are great for thick hair.

Straight Platinum Elegance

To keep your hair healthy and shiny, I suggest regular trims. Aladdin actress Naomi Scott (who played Jasmine) offers another perfect example of a low-maintenance thick haircut. Her shoulder-skimming strands are parted down the middle and feature subtle waves but no major layering. Chrissy Teigen is known for her gorgeous long, thick hair, which she often wears in effortless waves. If you have long hair and want a shaggy, lived-in feel, you should consider adding internal layers. This will reduce the weight in your hair, allowing more movement and ends that will create the look you are going for.

Trendy long layered tresses like this v-cut on long hair add dimension and body, which is perfect for women with thinner hair. A layered and long chop with curtain bangs can frame and accentuate the front of your face, especially your cheeks. Flaunt it with the golden brown shade, and you’ll achieve that beautiful softer finish.

Here are the best layered haircuts for long hair to consider for your next appointment. Chunky layers of blonde highlights catch the light and create an illuminating frame around the face. The soft, sun-kissed strands blend seamlessly with the base color, offering a look that’s effortlessly chic.

#11: Voluminous Shag with Peekaboo Highlights

Jazmyn Simon nails her asymmetrical bob by chopping in layers that thin out at the bottom. To lift the hair, apply a volume-enhancing mousse and let it air-dry. Jennifer Hudson's eye-skimming pixie proves that you can have layers even if you're donning ultra-short strands. To accentuate the varying lengths, work in a hair pomade (we're fans of the Malin & Goetz Hair Pomade, $24) a little bit at a time.

layers for thick long hair

Sticking straight up or formed at the sides of your head, it’s a super cute, perky hairstyle with or without a bold color. Go for straight twists that merge together at the back or try this diagonal one. In either case, two strands are twisted around while adding a chunk from the top of the head and letting it fall down creating the waterfall effect.

Whether you have naturally curly hair or are rocking extensions, you can achieve a sleek middle part like Quinta Brunson's. For extra definition with a lightweight hold that allows for movement, pick up Mielle Organics' Honey & Ginger Styling Gel ($15). This polished, lived-in look on Kirsten Dunst is an excellent styling choice for those on the shorter spectrum of medium-length hair. The hair subtly curls at the ends, which creates a rounded, slightly bouncy, elongated finish. We can't get Miranda Kerr's collarbone-length cut out of our minds—or our hair inspiration boards. Long, polished layers add extra volume and dimension to her shiny locks.

Brazilian bombshell Adriana Lima pulls off this layered, wavy style without trying. If you've got thick tresses, layers are a surefire way to remove some weight while adding softness and movement. Actress Parisa Fitz-Henley embraces her natural texture and lets her curls just be. Her soft layers lend form and style to her 'do, which is important when working with curly natural texture. To keep curls nourished, Stylianou swears by Olaplex treatments. "Do this on a weekly basis, leave overnight to get maximum effects, and apply Sunny Isle Jamaican Black Castor Oil ($9) to your roots," she instructs.

40 Chic Shoulder-Length Layered Haircuts For All Textures

layers for thick long hair

At the very end, you’ll find a photo gallery jam-packed with ideas to inspire your next haircut. Here’s a long layered hairstyle that works fine with golden blonde highlights! These choppy layers for long, thick hair offer tons of texture and boost volume that you’ll love.

Long Texture-Revealing Layers

This layered hairstyle is for women with coarse to fine hair. It’s just a versatile look for those who want their natural hair color to be a part of their balayage. The brightness and face-framing will open up any part of your face that you feel is too closed off. Ask for layers to help prevent your hair from looking weighed down and add texture.

Long Feathered Layers for U-Shaped Cut

Those with thick hair may be used to frizzy strands, knotty ends, flat roots, clumped hair movement and an array of other hair concerns. With the right haircut and combination of products, thick hair can be revitalized for shinier, bouncier and tangle-free hair that tackles unwanted flyaways. For women whose hair is naturally dark, a caramel ombre pairs well. No matter your skin color, the slight color change will look amazing and supernatural. Women over 50 have a tendency to cut their hair short, but you can rock your long hair at any age. Feel young and fresh with platinum blonde or a grey ombre on wavy hair.

Long V Cut with Flowy Layers

For volume in the crown and bangs, try using “Powder” by Hairstory. Go for a medium-to-long length shaggy haircut with curtain bangs. If you need help to stay looking professional but want a modern style, try a shaggy haircut with minimal layers and more of the ends sliced piecey. Soften up a shaggy cut with long textured layers and eye-framing bangs. A beautiful style is for ladies in their 20s and 30s who want a low-maintenance style.

Long Bob

For fine hair, utilize lightweight and long-lasting products like a dry texture spray. When considering long layered haircuts, it’s essential to decide how much blending you want within your layers. Choosing a delicious shade for highlights, like caramel or honey blonde, will help draw even more attention to your cute layers.

layers for thick long hair

Straight Layered Hair with Bangs

If you have thick hair, there’s a very good chance that you find it to be anything but low maintenance. After all, simply drying your strands can feel like a chore. The perimeter and surface layers are crucial in any hairstyle. But to complete the shaggy look, don’t forget the texture built within the hair.

You can throw your hair up in a bun when you’re running late, or keep it straight and simple. If your tresses are naturally straight, use a deep conditioner and let them air dry after washing. If your hair is on the curly side, blow dry it using a large, round brush. Don’t use too much hair spray in order to avoid crunchy hair. Consider long straight hair with soft layers for a perfect blend going from natural to long blonde. The mix between babylights and balayage blonde highlights makes it look seamless with less maintenance due to the rooted sombre.

To get the most out of this cut and style, apply a lightweight styling cream to damp hair first. Focusing on the ends, add a couple of oil pumps and give your haircut definition and shine while letting air dry. The disconnected inverted bob shag is all about the layers, creating a striking A-line down to the jaw. (Just don’t go too blunt with them, as the style will feel bulky.) To style, apply mousse to wet hair and blow-dry. Use a wide-barrel curling iron if you want to add waves and set your strands with some hairspray for additional volume and hold.

48 Haircuts That Will Make Thin Hair Look Fuller - Allure

48 Haircuts That Will Make Thin Hair Look Fuller.

Posted: Thu, 23 Feb 2023 08:00:00 GMT [source]

Then, take wide horizontal sections while curling your hair. This way, you’ll get a more wavy hair look instead of the classic, tight curls. A long layered shag can give you more edge than the traditional ones. Long hairstyles that feature long tousled layers suit fine or thick hair.

For women with thick hair looking for long layers, a medium blonde balayage can be helpful. It’ll add texture and dimension to your locks without sacrificing length. Talk with your colorist about adding extra face-framing layers. When it comes to thick hair, get the most out of it by adding layers. They offer a great way for women with long locks to add texture and movement.

Rounding the ends of hair draws attention to the layers and creates a polished and elegant style. Long thick hairstyles tend to be pretty voluminous just by default. To channel your inner diva and kick things up a notch, style with a deep part for added oomph up top.

"The layering like this would allow for finer hair to still look full and not seem so heavy on thicker hair allowing for movement," he adds. Chrissy Teigen's super-sleek waves are cut into barely-there layers that give the ends a nice waterfall effect. We love the center part and rich caramel highlights blended throughout, adding dimension and shine. To replicate Teigen's lustrous locks, apply Sachajuan Shine Serum, $36) when you finish styling. Roszak says that adding light layers throughout medium-length hair will add volume to already fine hair.

If you have thick hair and want a new look, here’s a great option! Internal layers are perfect for reducing the weight of thick hair. The layers let your hair lay naturally and elegantly, similar to the hair in this picture.

You’ll love this long hairstyle with visible layers because it adds movement and dimension to your look. With just the right amount of layering, this hairstyle provides a touch of elegance while still maintaining length. It works best for those who want to keep their long hair but crave a change and added texture. Layers can remove excess weight without sacrificing length, which makes this a great style for those with thick or heavy hair. For styling this haircut, apply a volumizing spray to your damp hair. Blow-drying this treated hair with a round brush will create body and bounce.

This hairstyle is perfect for you if you want to keep its length while enhancing its natural waves or curls. For styling, use a lightweight mousse to build volume and create separation. Scrunch your hair with a microfiber towel to remove excess moisture and avoid frizz. You can also use a pick to fluff at the roots for added volume gently.

This sun-kissed look with lots of movement allows for versatile styling. No matter which way you part your hair or style your long hair, layers will always lay beautifully. For long layered hairstyles like this, it’s essential to use a good conditioner to keep your hair healthy, shiny, and strong.

Using hair dye in pregnancy: is it safe?

can i color my hair while pregnant

There aren't any conclusive studies about how safe the chemicals used in perms are during pregnancy, but the body absorbs very little of those chemicals. If a healthcare provider is on board, bleaching your hair during the second or third trimester of pregnancy is most likely safe. This article explains everything you need to know about hair coloring and bleaching during pregnancy and breastfeeding.

Drugs & Supplements

Can you dye your hair whilst pregnant? How to safely colour your hair - Harper's Bazaar UK

Can you dye your hair whilst pregnant? How to safely colour your hair.

Posted: Thu, 31 Aug 2017 07:00:00 GMT [source]

Many women color their hair, whether it’s just a few highlights or a shade completely different from their own. Pregnancy and hair dyeing aren’t typically thought to be compatible, but advances in the beauty industry have made it easier to change your look during pregnancy. Read on to see what you can and can’t do with your hair while pregnant. Aside from the aforementioned, your hair — and more specifically, your hair color — routine may need some sharpening up. Dyeing your hair while pregnant is a common concern many moms-to-be face, so we’re here to help. If you’re expecting and wondering if it’s safe to dye your hair while pregnant, keep reading as we break down what you need to know.

So, Is It Safe to Dye Your Hair While Pregnant?

The American College of Obstetrics and Gynecology states that many experts consider hair dye to be nontoxic to a fetus. Based on animal studies, the scalp only absorbs small amounts of the chemicals. Choosing a safe, gentle hair dye is one way to protect your baby from chemical exposure. You should seek medical care and consult your doctor or pediatrician for any specific health or nutrition issues. Never disregard professional medical advice or delay seeking medical treatment, care, or help because of information you have read on Enfamil. Whether you want to give your hair a refresh or are keen to know more about the alternatives to hair dye, here’s our expert advice on whether you can still dye your hair during pregnancy.

Is it safe to dye my hair during pregnancy?

You can adjust the ratio of liquid you use in your paste and how long you leave it in your hair to determine how dark you go. What to Expect is the world’s most trusted pregnancy and parenting brand for a reason. Our product recommendations are based on expert parent insight, advice from medical professionals and feedback from the millions of parents and parents-to-be in our community. We made our selections for the best pregnancy-safe hair dye by looking for products that are plant-based and/or organic and free of certain ingredients as outlined in the guidance above. We also consulted What to Expect community and user reviews to make sure we were picking the best of the best. Keratin hair treatments – also known as Brazilian blowouts – however, are best skipped while you're pregnant.

Don't Dye Your Eyebrow or Eyelashes

Since no one knows the exact risks, though, many sources recommend waiting until after pregnancy to be safe. Vegetable and henna dyes are other less-toxic at-home alternatives, though check the label before buying. Some so-called "natural" processes contain just as many chemicals as their traditional counterparts. No doubt, you may be ready to hit the bottle (of hair dye, that is) after about a month. With all of those pregnancy hormones racing through your body, your hair may be growing faster than ever and may even have a different texture and color than you’re used to. Yes, you can dye your hair while you're pregnant — as long as you take certain precautions and mention your pregnancy to your stylist.

According to Ross, as long as you’re carefully following FDA safety guidelines, it’s safe to get your hair dyed every six to eight weeks. However, not all of these hair dyes are equally safe for use during pregnancy. Keep reading to know what types of dye are safest for you and baby. Again, there has been very little research done into the use of hair dye while breastfeeding, however, it's thought to be safe as very few chemicals if any pass through to your bloodstream and into your breastmilk.

Is it Safe to Bleach Your Hair While Pregnant? - Glamour

Is it Safe to Bleach Your Hair While Pregnant?.

Posted: Thu, 07 Feb 2013 08:00:00 GMT [source]

From the What to Expect editorial team and Heidi Murkoff, author of What to Expect When You're Expecting. What to Expect follows strict reporting guidelines and uses only credible sources, such as peer-reviewed studies, academic research institutions and highly respected health organizations. Learn how we keep our content accurate and up-to-date by reading our medical review and editorial policy. Ask your stylist about gentler options, like color with an ammonia-free base. Here are five tips to ensure you get the hair color you want while protecting your baby-to-be.

That’s great, as it gives you the option to choose the dye that makes the most sense for you. If a person has any concerns about hair treatment during pregnancy, they should speak with a healthcare professional. Although limited research is available, researchers believe it is not harmful for a person to dye their hair while pregnant. The skin can absorb these chemicals through the skin during application to the hair. Root Touch Up is a dry powder that can be brushed onto hair to cover roots.

can i color my hair while pregnant

Many keratin hair treatments have formaldehyde in them, which can cause cancer. If your heart is set on getting a Brazilian blowout, ask your hair stylist to use a formula without formaldehyde. If you're coloring your own hair at home, wear gloves and work in a well-ventilated room to minimize your exposure to the chemicals used in the coloring process. Studies on animals show that high doses of these chemicals do not cause serious birth defects.

Make sure you apply color in a well-ventilated area, and keep a window cracked open to limit the amount of fumes you breathe in. This measure reduces the amount of chemicals that touch and absorb into your skin. It’s also important to note that coloring your hair while pregnant may lead to different results than it did before baby. “Many hairstylists notice that the various coloring processes during pregnancy can be unpredictable due to the strong hormonal effect on the hair itself,” Ross says. The best and safest kind of hair dye to go for are plant-based or organic dyes. These will be a lot more gentle on your skin, and are particularly ideal if you suffer from dry or irritated scalp.

According to the Mayo Clinic, your skin only absorbs a limited amount of hair dye and other hair grooming and styling products, with these chemicals generally not posing a threat to a developing baby. That being said, infected or irritated skin can lead to more chemicals being absorbed as well as if there’s a break in the skin. Still, more research needs to be done to conclude that there are no adverse effects caused by coloring hair during pregnancy, making it important to take precautions. If you’re looking to lighten up your locks, your stylist might bleach your hair before dyeing it—but can you bleach your hair while pregnant? Bleach is considered as safe to use during pregnancy as hair dye, but, similar to the other dyes, Reavey still recommends waiting until after the first trimester. Plus, she and Ross recommend taking extra precaution to ensure the product isn’t directly applied to the scalp.

Dyeing your hair during pregnancy and breastfeeding is generally considered safe. While there is no definitive study or research to back this, experts believe the trace amounts of dye absorbed by the skin (if any) are unlikely to cause health issues. The first trimester is a delicate time when your baby is most susceptible to toxins like alcohol and certain medications.

If you put dye on your ends and then they touch your bare shoulders, that’s generally the same risk as getting dye on your scalp when coloring your roots. You might decide to wait until after the first 12 weeks of pregnancy to dye your hair, when the risk of chemical substances harming the baby is lower. There's very little research that focuses on the use of hair dye while nursing, Langdon says. Health experts generally believe that it's fine to color your hair while breastfeeding because the amount of chemicals that could reach your breastmilk is likely insignificant. Hair dyeing may not be the only beauty treatment to be concerned about if you’re pregnant.

Can You Dye Your Hair While Pregnant?

Table Of Content Can you bleach your hair while pregnant? Can You Highlight or Balayage Your Hair During Pregnancy? Will using hair dye incr...