Amino Acids
Why Amino Acids Matter in Skincare
Amino acids are the fundamental building blocks of proteins like collagen, elastin, and keratin, which are essential for maintaining the skin’s structure, firmness, and resilience. In beauty products, they play a key role in supporting the skin barrier, improving moisture retention, and enhancing overall texture & elasticity.
These naturally occurring compounds help the skin stay balanced and hydrated by attracting and holding water — similar to humectants — and by reinforcing the skin’s natural defense system against environmental stressors. They are suitable for all skin types, including sensitive skin, and are often found in supplements, moisturisers, serums, hair treatments, & anti-aging treatments.
| Amino Acid | Primary Benefit | Common Sources |
|---|---|---|
| Arginine | Supports collagen production and helps skin recover from damage. | Soy protein, nuts, seeds |
| Glycine | Improves firmness and elasticity; essential for collagen formation. | Gelatin, soy, fish, legumes |
| Proline | Maintains skin structure and smoothness by supporting collagen stability. | Egg whites, dairy, collagen peptides |
| Serine | Enhances hydration and helps strengthen the skin’s moisture barrier. | Silk proteins, soybeans, eggs |
| Histidine | Acts as an antioxidant and soothes irritation or redness. | Wheat, rice, nuts, meat |
| Alanine | Balances skin moisture and provides an energy source for skin cells. | Meat, beans, grains |
| Lysine | Strengthens skin structure and supports collagen synthesis. | Legumes, quinoa, fish |
Where are Amino Acids derived from?
- Plant sources: such as soy, wheat, and rice proteins
- Animal sources: like collagen or silk proteins
- Fermentation or synthetic processes: for vegan and pure formulations
Bottom line: Amino acids are the quiet heroes of skincare — strengthening, hydrating, and protecting the skin from within to keep it smooth, firm, and healthy-looking.
Products featuring Amino Acids
Serum for red, sensitized skin that works to reduce excess surface oil.
Each capsule of Vitafit Barley Grass contains 498mg of New Zealand sourced Barley Grass Powder.