Best Amino Acids For Hair Growth

Each and every one of us loses a small amount of hair daily. Around one hundred hairs in fact. This sounds scary but it’s a natural shedding process that allows our hair to regenerate itself.

One thing that can ensure the growth of strong, healthy hair is keratin.

Keratin is a protein made up of amino acids. These little building blocks are in every cell of our bodies and some of them our body cannot naturally produce. They are essential, meaning we can only get them from our diet.

But what are the best amino acids for hair growth? Read on to find out.

Who Needs Amino Acids?

The answer to that question is: everybody.

Regardless of who you are, all of your cells contain proteins and of course amino acids are the building blocks of protein.

There are over 500 known amino acids although only 20 are found in our bodies and from those 20, nine are not produced in our bodies.

These essential amino acids have important functions in the body. We must make sure that we source enough either through our diet or supplementation.

If you suffer from thin or slow-growing hair, there are many ways in which an amino acid supplement can be of assistance. I’m going to explain the science behind this below.

Amino Acids and Hair Growth

Two of the essential amino acids - methionine and lysine - make up the protein keratin. Also important is a good supply of collagen, which is stimulated by lysine.

Two non-essential amino acids which are also imperative to the growth of your locks are arginine and glutamine.

Although these amino acids are naturally produced within the human body, their production tends to slow with age. This is why supplementing all four amino acids can be beneficial for hair growth.

It’s important to note that not only do amino acids make up keratin, but they also play an important role in the creation of red blood cells. Red blood cells carry oxygen to the hair follicles which stimulates healthy hair growth.

Check here the most effective remedies for hair growth!


Unfortunately, hair loss can happen to anyone at anytime. A lot of it is down to genetics. If your father was bald by his mid 30s, there is a good chance the apple won’t fall far from the tree.

Although amino acids can assist hair growth, that doesn’t mean they can cure male-pattern baldness.

There are also a number of non hereditary factors which long or short term hair loss. Stress and hormonal changes can play a huge part. Many women find their hair thinning excessively during and after pregnancy as well as during the menopause.

In the case of genetics, boosting your amino acid supply is not a miracle cure. You can not go to bed like Bruce Willis and wake up like Rapunzel. I know, devastating right? But what it might do is boost your natural hair growth to its maximum potential.

How To Boost Your Amino Acid Intake

There are many amino acid rich foods you can add to your diet. This will help you boost your reserves a little.

These foods in particular are rich in methionine and lysine:

  • Eggs
  • Fish
  • Lean meats
  • Cheese
  • Seeds
  • Nuts
  • Legumes
  • Leafy greens

Nevertheless, you can also boost your amino acids (specifically those that support hair growth) with the use of supplements.

What To Look For In An Amino Acid Supplement

When choosing an amino acid supplement, look for one specifically for hair growth. There are vast amounts of amino acid supplements on the market which are all designed for specific use.

Supplement Form

There are a number of options available - some in the form of capsules and some in liquid form. Which you prefer is simply down to personal preference.


Some supplements geared towards hair growth include other ingredients such as biotin, vitamins and herbs all of which claiming to aid hair growth.

Personally prefer supplements which are pure. So if I want an amino acid supplement, that is all I want to be inside of it. With that in mind, if you are for example looking for both an amino acid supplement as well as a biotin supplement, finding one product that delivers both will be a bonus

The Best Amino Acids for Hair Growth

I’ve taken a look at the products out there offering to boost your amino acids and give you luscious locks. There are quite a few, but I’ve narrowed it down to my top five.

I’ve tried to highlight what sets them apart, while offering a list of pros and cons for each. I will also leave you with my overall favorite.



Our rating

This product is one of the most popular options available.

Again, it’s filled with vitamins, minerals and amino acids to promote hair growth.

Some women commented that their hair grew as much as two inches in just 12 days while using this supplement. You only take 2 capsules a day and you get a 30 day supply. They are also really reasonably priced. All in all, it appears they do what they say, which is probably why they are so popular.

One not so great point worth mentioning though, these are advertised as vegetable capsules. However, upon further inspection of the ingredients (always read the label) one of the ingredients, hydrolyzed collagen, is derived from animals. Therefore, they are not suitable for vegetarians.


  • Vitamins, minerals and amino acids
  • 30 day supply
  • Users found rapid hair growth
  • Good price


  • Not vegetarian as advertised



Our rating

This is another capsule form supplement which is designed especially for women.

It’s rich with multivitamins including vitamin D, biotin and folic acid. IT also contains all 20 amino acids.

It gets a lot of great feedback from women who currently use it or have done so in the past. Lots of ladies noticed thicker, healthier hair as well as glowing skin.

You take one capsule twice a day with food. The only downfall is the blend is obviously quite potent and some women commented that it left them feeling continuously nauseous regardless of what time of the day it was taken.

Now obviously it could just be that for those individual women it was slightly too strong. However, it is something to bare in mind as a possible side effect.


  • Filled with amino acids
  • Full of vitamins and minerals
  • 30 day supply


  • Can make you nauseous



Our rating

This is one supplement that really is full of amino acids. It doesn’t just contain the essential nine but all 20.

It comes in a one month supply but requires you to take 3 capsules daily. For me personally that is not a great option as I am not the greatest pill taker and it’s easy to forget. But for someone who doesn’t mind swallowing tablets they might be a good option.

This product makes sure you get all of your amino acids in one place.


  • Packed with amino acids
  • Capsules
  • No additives
  • One month supply
  • Reasonable price


  • Must take 3 capsules daily



Our rating

This is a hair supplement which is designed specifically for women.

It offers the essential amino acids which are helpful for hair growth and strength, as well as a number of vitamins and minerals including vitamin D and folic acid. Think of these like a ladies multivitamin with added amino acids.

They are available in a one, two or three month supply at a pretty reasonable price.

Women who currently use this product have good things to say about it. Many women comment that not only does their hair feel healthier and more luscious, but their nails are also really strong. For me personally though, the size of the capsules would make me avoid using it!


  • Formulated for women
  • Amino acids with added vitamins
  • Reasonable price


  • Large tablets



Our rating

This hair growth supplement contains amino acids and proteins.

It comes in the form of both capsules and a powder drink. It contains a one month supply which is pretty standard for this type of products.

FAST Hair Growth Supplement gets good feedback from people who tried it. Lots of people report that they noticed a decrease in hair fall even if no changes in length or regrowth occurred.

The one big downside is the price - it’s definitely on the expensive side.


  • Filled with amino acids and proteins
  • Comes in capsule and powder form
  • Helps reduce hairfall


  • Expensive

What’s The Best Amino Acid Supplement For Hair Growth?

Although most of the products offer a good source of amino acids and users found them helpful, I personally I like the Hairfluence brand.

The main selling point is that it’s been used by so many people who have seen big results.

If you have tried any of the products I’ve reviewed please feel free to share your experience with me in the comments below. Getting personal feedback from our readers is great and helps others make informed decisions when choosing a supplement.


Helen Sanders

Chief editor here at Health Ambition, I'm a proud mother of two passionate about nutrition and ways to live healthier with more energy!

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