What Amino Acids Should I Take for Hair Loss: Expert Recommendations

Medically reviewed by Dr. Bilal Khan M.B.B.S.
Written by Our Editorial Team
Last updated

When it comes to promoting hair health, a number of nutrients come into play. Among these, amino acids play a critical role. If you're wondering, "What amino acids should I take for hair loss?", this article is for you. Let's explore how these vital nutrients contribute to hair health and which ones you should focus on to combat hair loss.

What Amino Acids Should I Take for Hair Loss?

Several amino acids are beneficial for promoting hair growth and overall hair health. These include Cysteine, Methionine, Lysine, Arginine, and Proline. Cysteine, a sulfur-containing amino acid, plays a significant role in the formation of keratin, the protein that primarily makes up hair.

Role of Amino Acids in Hair Health

Amino acids, the building blocks of proteins, are crucial for proper hair growth. A diet lacking in sufficient protein may lead to hair abnormalities, such as hair loss and thin, brittle hair. Amino acids contribute to the synthesis of collagen, which contains amino acids used to build keratin — an essential part of hair structure. They can also enhance the absorption of iron, a vital mineral for hair health.

Benefits of Amino Acids for Hair

Amino acids offer several benefits for hair health. They help add hydration, as some amino acids can draw moisture into the hair and create a barrier to prevent moisture loss. Additionally, they are commonly used in shampoos to add body and volume to the hair.

Amino Acids and Keratin Production

Healthy hair requires plenty of keratin, and to a lesser extent, collagen. For the body to produce these structural proteins, it must have sufficient access to certain amino acids. Four key amino acids necessary for keratin production are cysteine, lysine, arginine, and methionine.

A Note on Amino Acid Supplementation

While the benefits of amino acids for hair health are clear, it's important to note that scientific evidence regarding the effectiveness of amino acid supplementation for improving hair growth is not conclusive. It's always best to consult a healthcare provider before starting any new supplement regimen.


In conclusion, amino acids play a vital role in promoting hair health and combating hair loss. If you're dealing with hair loss, considering a diet or supplements rich in amino acids such as Cysteine, Methionine, Lysine, Arginine, and Proline may be beneficial. However, it's crucial to seek professional advice before starting any supplementation. Remember, a healthy diet and balanced lifestyle go a long way in maintaining hair health.

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Dr. Bilal Khan M.B.B.S. graduated from the Jinnah Sindh University in Karachi. He'll take the official medical licensing program in the US (USMLE) in September 2023. Bilal has a passion for research and has extensively fact-check and medically review articles under his name to make sure you have the most accurate information.