Vitamin A for Hair Loss: Can It Prevent Thinning and Promote Growth?

Medically reviewedby Dr. Amy Revene M.B.B.S.
WrittenbyLuat Duong
Last updated

Are you wondering how vitamin A can benefit your hair? 

Often overlooked in the realm of hair care, vitamin A is a powerhouse nutrient that plays a crucial role in maintaining healthy hair growth and scalp condition. 

In this article, we'll explore the benefits of vitamin A for hair and how you can incorporate it into your routine to achieve lustrous, strong locks.

What are the benefits of Vitamin A for hair?

vitamin a for hair

Absolutely, Vitamin A packs a powerful punch for maintaining healthy hair. It's essential not just for keeping your hair looking good but also for its overall health. This vital nutrient helps repair hair, maintain moisture levels in the scalp, and may even encourage hair growth. It’s a key ingredient in many hair loss treatments for a good reason.

Vitamin A, particularly in the form of beta-carotene, boasts anti-inflammatory properties that are a boon for individuals with Alopecia Areata—an autoimmune condition causing patchy hair loss. 

This form of Vitamin A helps mitigate inflammation around the hair follicles, promoting a healthier environment for hair growth. 

Moreover, every cell in our body, including hair cells, requires Vitamin A to thrive. Insufficient Vitamin A can lead to hair loss, while adequate levels can enhance the hair’s beauty and health. 

It supports the production of sebum, an oil that keeps the scalp moisturized, reducing problems like split ends and breakage.

Why you can trust Scandinavian Biolabs?
TrichoAI Hair Loss Analysis
Our free, anonymous and dermatologist-developed AI analyzes your hair loss in 30 seconds, suggesting personalized solutions to combat thinning. Understanding your hair condition has never been easier.
Yes, I want to fix hair loss

Does vitamin A help your hair grow?

vitamin a for hair

Yes, vitamin A plays a critical role in hair growth. Known also as retinol, it helps your skin glands produce sebum, an oily substance that prevents hair from becoming dry and brittle. This not only helps to keep the scalp well-moisturized but also supports overall hair health. 

Vitamin A's antioxidant properties further protect hair follicles from oxidative stress and damage caused by free radicals, which is crucial for maintaining strong and functioning follicles.

Additionally, the role of vitamin A in cellular growth is significant. It ensures that your hair grows from a healthy scalp, contributing to longer, thicker, and more vibrant locks. 

However, it's important to balance your vitamin A intake; excessive amounts can lead to hair loss, underscoring the need for moderation.

Can vitamin A deficiency cause hair loss?

Yes, a deficiency in vitamin A can indeed lead to hair loss. While vitamin A is crucial for maintaining healthy hair, lacking it can cause your hair to become dry and brittle, making it more susceptible to thinning. This deficiency doesn't just affect your hair; it also impacts your vision, immune system, and skin health. 

Often resulting from restrictive diets or conditions like inflammatory bowel disorders, a lack of adequate vitamin A can lead to several health issues. 

Ensuring a balanced diet rich in vitamin A can help maintain not only the health of your hair but also support other vital body functions.

Can excessive Vitamin A lead to hair loss?

vitamin a for hair

Certainly, too much vitamin A can cause hair loss. While vitamin A is essential for many bodily functions, excessive intake can lead to toxicity. When it comes to hair health, too much vitamin A can accelerate the hair life cycle, pushing hair follicles to reach the end of their growth phase too quickly and shed prematurely. 

If your body can't replace the lost hair fast enough, this can lead to thinning hair and, in severe cases, baldness. 

Moderation is key when consuming vitamin A, especially if you're taking supplements that contain retinol. Balancing your intake can help avoid these adverse effects and keep your hair looking healthy.

Recommended dosage of Vitamin A

The recommended dietary allowance (RDA) of vitamin A varies by age and gender: 900 mcg for men, 700 mcg for women, and 300-600 mcg for children and adolescents. Sticking to these amounts is generally sufficient for maintaining good hair health and might even help with hair growth and restoration.

While the maximum tolerable upper intake level (UL) for vitamin A is 3,000 mcg per day, it's wise to stay well below this limit unless advised by a healthcare provider. 

Excessive consumption of vitamin A beyond the RDA is not necessary for hair health and can be harmful.

Are there any side effects of Vitamin A

Taking vitamin A within the recommended limits is generally safe, but exceeding these can lead to several side effects:

  • Nausea and vomiting.
  • Vertigo or severe dizziness.
  • Bone thinning and liver damage over the long term.
  • Headaches, diarrhea, and skin irritation.
  • Joint and bone pain.
  • In rare cases, serious allergic reactions like rash, swelling of the face or throat, and difficulty breathing.

Types of Vitamin A

Vitamin A is crucial for maintaining healthy hair and overall well-being, but did you know it comes in different types? Understanding these can help you choose the best source for your needs.

Vitamin A1 (Retinol)

Vitamin A1, or retinol, is found exclusively in animal sources such as liver, fish, and dairy products. It is readily absorbed and used by the body, making it an efficient way to boost your vitamin A levels. 

For those looking to improve hair health, retinol is a direct form of vitamin A that doesn't require conversion by the body, thus providing immediate benefits.

Provitamin A (Carotenoids)

Provitamin A, known as carotenoids, is derived from plant-based sources like fruits and vegetables. These need to be converted into active vitamin A by the liver.

However, it's important to note that about 45% of people have a genetic mutation that reduces their ability to convert carotenoids into usable vitamin A. 

This doesn't make carotenoids a less viable option though; they still contribute significantly to overall health and can be a crucial vitamin A source for those following vegan or vegetarian diets.

What foods are high in Vitamin A1 (Retinol)?

Here’s a list of foods rich in retinol:

  • Beef liver
  • Lamb liver
  • Liver sausage
  • Cod liver oil
  • King mackerel
  • Salmon
  • Bluefin tuna
  • Cheddar
  • Camembert
  • Roquefort cheese
  • Hard-boiled egg

What foods are high in Provitamin A (Carotenoids)?

Here's a rundown of plant foods high in carotenoids:

  • Sweet potato
  • Winter squash
  • Kale
  • Collards
  • Turnip greens
  • Carrots
  • Sweet red pepper
  • Mango
  • Cantaloupe
  • Spinach
  • Romaine lettuce
  • Watermelon

A better approach for your overall hair health

hair growth serum

If you're grappling with hair thinning and looking for a reliable solution, Bio-Pilixin Activation Serum might just be what you need. 

Developed by hair care experts using cutting-edge stem cell technology, this serum is designed to nurture your hair follicles and kickstart your hair growth journey. 

It's packed with multiple plant growth factors that not only help in reducing hair thinning but also support new hair growth by stimulating blood flow and providing essential nutrients to your scalp.

The effectiveness of Bio-Pilixin Serum isn't just a claim—it's backed by robust clinical evidence. In a trial involving 40 participants suffering from various types of hair loss, 77% reported a reduction in hair loss after just 45 days. 

The benefits don't stop there; by the 150th day, 93% of the participants saw a significant reduction in hair loss, and 73% observed a measurable increase in hair density. 

These results highlight the serum's potential to not only slow down hair loss but also enhance hair thickness.

What's more, many users start to see a noticeable difference within just a few weeks, often reporting less hair fall during their shower routines. 

This rapid onset of benefits combined with the longer-term improvements makes Bio-Pilixin Serum a promising option for those seeking a drug-free solution to hair loss.

And here’s the kicker: we're so confident in our product that we offer a 150-day money-back guarantee. If you don't see the results you're hoping for, you can get a full refund. 

It's risk-free, making it easier for you to try out Bio-Pilixin and see the benefits for yourself. So why wait? Take the first step towards better hair health today and feel more confident with every strand.


Vitamin A plays a pivotal role in maintaining healthy hair. 

Remember, while Vitamin A is beneficial, maintaining the right balance is key to avoiding potential side effects.

Incorporating a balanced diet along with safe, clinically proven hair care products like Bio-Pilixin Activation Serum can help you achieve and maintain lush, healthy hair. 

If you're exploring ways to enhance your hair's health and appearance, consider both your nutritional intake and suitable hair care products as part of your overall strategy.


Is vitamin A good for thinning hair?

Yes, vitamin A is beneficial for thinning hair. It helps the body produce sebum, an oily substance that moisturizes the scalp and keeps hair follicles healthy. A deficiency in vitamin A can lead to dry scalp and increased hair loss.

Can vitamin A hair loss be reversed?

Hair loss due to vitamin A deficiency can often be reversed by balancing your intake. If excessive supplementation has led to hair loss, reducing intake and allowing the body to utilize stored vitamin A can help restore hair growth. It's important to focus on getting vitamin A from food sources as your body adjusts.

Which vitamin can stop hair growth?

While a deficiency in vitamin A can lead to hair loss, excessive intake of vitamin A can also cause hair loss. To prevent hair growth issues, it is crucial to consume vitamin A in moderation, balancing dietary sources with any supplements and avoiding over-supplementation.


Luat Duong

Luat Duong is a Copenhagen-based writer and content strategist specializing in hair loss and health. His work has been featured in MyHealthGuide, The Right Hairstyles, and Woman's Era. He is a graduate of Vaasa University. You can connect with him on LinkedIn.