amino acids

Fundamental constituents of all proteins found in the body, such as: alanine, arginine, asparagine, aspartic acid, cysteine, cystine, glutamic acid, glutamine, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, and valine. Some of these amino acids can be synthesised by the body; others (known as essential amino acids) must be obtained from protein in the diet.

In skincare products, amino acids act as water-binding agents, and some have antioxidant properties. Amino acids can be combined with other ingredients that have skin-restorative ability to work in unison to fight signs of ageing.

Note: Research has shown amino acids for skin work best when several of them are combined. For this reason, we rate the amino acids as a group more highly than individual amino acids. Although some individual amino acids have distinctive benefits compared to others, you would be selling your skin short if you only focused on one particular amino acid.

Reference for this information:

European Surgical Research, January-April 2002, issues 1-2, pages 53-60

See natural moisturising factor (NMF)

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Paula Begoun is the best-selling author of 20 books about skincare and makeup. She is known worldwide as The Cosmetics Cop and creator of Paula’s Choice Skincare. Paula’s expertise has led to hundreds of appearances on national and international radio, print, and television including:

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