An adorable toddler with white hair eating some delicious looking watermelon.

“You were probably expecting your hair to start turning gray when you had kids, but we are pretty sure you didn’t expect to see gray hairs on your kid’s head. You can not unsee it now that you have seen it, and you are wondering if it is a sign of something serious.”

Here is what you need to know about gray hair in children, from what causes it to how you can help them cope with looking different than their friends.

Just to be clear, we’re not talking about a single gray hair here. Even little kids can sprout a colorless strand from time to time, and it’s nothing to worry about (it’s also more likely to be noticed if your child has dark hair versus platinum blond).

We’re talking about premature graying. This is the appearance of several gray or white hairs at a young age — before 20 in white people and 30 in Black people, per a 2018 review. At the time of publication, statistics could not be found for other ethnicities.

There are a number of reasons why your child may have premature graying. Some of the most common are listed.

Genetics

This is the most common cause of premature graying according to the review. It is more likely that your child will go gray if you or someone else in your family started going gray at an early age. This is a common cause of gray hairs in high school students.

Vitamin deficiency

If your child does not get enough vitamins and minerals, they can be at risk of premature graying. These include:

  • Vitamin B12. This powerhouse vitamin helps keep your blood healthy and can prevent anemia, per the National Institutes of Health (NIH). However, it has also been linked to premature graying. Researchers in a 2016 study observed lower levels of B12 in participants under the age of 25 who had premature graying.
  • Zinc and copper. A 2022 study suggests that premature graying may be linked to insufficient levels of zinc and copper, as well as selenium.
  • Folic acid. Another possible nutrient deficiency that can cause premature graying is folic acid. A 2017 study found that participants under age 20 with premature graying had deficient levels of folic acid.
  • Vitamin D. Here’s another reason for your teen to get their daily dose of sunshine: A 2013 study found that vitamin D levels were low in high school–age students with prematurely gray hair.

Environmental exposures

Stress is often linked to an increase in gray hair. Yet with young children who are still growing (and even, in most cases, teens), physical or emotional stress isn’t usually high enough to cause premature graying.

Environmental stress can cause early graying.

Exposure to air pollution, UV rays, and even harsh shampoos or hair products can cause hair to become colorless. The worst factor may be cigarette smoke, which can literally have an aging effect on hair. A 2013 study found that people who smoked before age 30 had an earlier onset of gray hair.

Medical conditions

A few medical conditions can cause premature graying in children. If your child is on the younger side, you may want to talk to their doctor about possible medical reasons for their gray hair.

These may include:

  • Vitiligo. The skin condition vitiligo destroys the color-producing parts of your hair follicles, so a child with vitiligo may experience premature graying.
  • Thyroid disease. Either type of thyroid dysfunction — hypothyroidism or hyperthyroidism — can have an unhealthy effect on the hair, a 2008 study suggests. This includes causing premature graying.
  • Alopecia areata. Alopecia areata is an autoimmune disease that can cause the sudden loss of patches of hair. When the hair grows back it may be temporarily or permanently gray.

Poor diet

Most kids are pretty well adapted to surviving on a self-inflicted diet of chicken nuggets and pasta, but over time, a chronically poor diet could have effects on your child’s hair health.

The 2018 review of studies mentioned earlier notes that protein deficiency, along with an absence of other necessary nutrients, can cause hypopigmentation, or patches of lighter-toned skin. That aligns with the connection between folic acid and premature graying. According to the NIH, folate deficiency is commonly found in people with a poor diet and often leads to anemia, along with a lack of B12.

When to talk with your doctor

“If your child has more than a few gray hairs, it is a good idea to check with their doctor. They will probably do a full medical exam to find out why your child has gray hair. They will discuss your child’s medical history and that of your family, so you may want to ask around to see if premature graying is a problem in your family.”

“It is helpful to keep a journal of your child’s eating habits. The doctor will ask your child questions about what they eat to rule out health conditions. If you mention your child’s refusal to eat any type of food, they may want to investigate more to see if there is a deficiency.”

If your child has other symptoms like excessive fatigue, weight loss, or hair loss, you should talk to your doctor. This could be a sign of a deficiency of vitamins or an immune system disease.

Unfortunately, treating white hairs can be tricky. If there was an easy solution for getting rid of white hair, everyone over age 35 would be doing it! But you do have a couple of options if your child is experiencing premature graying.

  • Address health concerns. There’s no magic pill you can take to reverse gray hairs, but if there’s an obvious source of your child’s premature graying, you can work with their doctor to promote healthier hair growth. If your child has thyroid disease, for example, managing their thyroid health may stop the growth of grays. You can also ask your child’s doctor for help implementing some home remedies or adding certain foods and supplements to your child’s diet, like vitamin B complex, which may encourage healthy hair color, a 2020 review of studies suggests.
  • Color it. Whether you use a box dye or take your child to a kid-friendly salon, you can choose to color your kid’s hair to cover the grays. Most temporary, wash-out hair dyes are safe to use on kids, though experts have different opinions on when kids can safely use permanent dye. Just keep in mind that once you start coloring hair, there’s constant upkeep as hair grows. And if you choose to grow out the color, it will take months (or a super short haircut!).
  • Leave it alone. Depending on the cause of your child’s white hair, it may be reversible, in which case it may be better to leave the grays alone. Eventually, they’ll shed, and new (potentially colored) hair will grow in. Even if it’s not reversible, you and your child may decide to embrace the gray and leave it as it is.

Helping a child learn to love their gray hair

It is hard to see your child being teased or bullied for being different. Depending on the age of your child, you may or may not want to get involved in their social circles, as the older kids are more interested in dealing with their own peer relationships.

You can help your child deal with being bullied by helping them with some simple ways.

  • Encourage your child to learn about the cause of their gray hair, and use it as a teachable moment for their peers. Example: “Yes, my hair is gray! That’s because I have something called alopecia. Do you know what that is?”
  • “If you ask about your child’s day, you can be aware of their moods.”
  • If your child has a social media presence, keep an eye on it.
  • Give your child the tools to cope with bullying in the moment. For example, encourage them to walk away calmly toward an adult or safe group of peers rather than engaging, the advocacy organization Changing Faces suggests.
  • If you can, give your child the chance to work with a guidance counselor, therapist, or social worker inside or outside the school setting, so they can maintain their self-confidence and develop solid skills.

Whether or not you can prevent gray hair depends on why your child has it. If the cause is genetic, you won’t be able to stop premature graying. Other causes of gray hair (like autoimmune diseases and vitamin deficiencies) can be corrected or managed to prevent the future growth of white hair.

“Be gentle with your child’s hair.”

  • keeping it protected from the sun with hats made from SPF fabric
  • using hair products with clean ingredients
  • Carefully combing or brushing wet hair.
  • avoiding any heat styling products

Can white hair turn back to its previous color?

Individual strands of white hair can not be changed back to their original color. The color of a follicle is lost when it becomes colorless.

“If your child has gray hair because of a medical condition, you can reprogram the hair color to match the rest of the body. As the hair on your child’s head is lost and the hair is colored, you may be able to see a reversal of the hair.”

If your child has a few gray hairs, it is probably not a cause for concern, but if they have an underlying condition like an autoimmune condition or a deficiency in vitamins, it could be a cause.

“There isn’t anything you can do to prevent or reverse premature graying, which is often genetic. If you see gray hair in your child, you should talk to the doctor.”