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Amino acids play central roles both as building blocks of proteins and as intermediates in metabolism. The 20 amino acids that are found within proteins convey a vast array of chemical versatility.The precise amino acid content, and the sequence of those amino acids, of a specific protein, is determined by the sequence of the bases in the gene that encodes that protein. The chemical properties of the amino acids of proteins determine the biological activity of the protein.
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 synthesized by the body; others, the essential amino acids must be obtained from protein in the diet.
In skin-care products, these types of ingredients act primarily as water-binding agents, and some have antioxidant properties and wound-healing abilities as well.
Because of the low molecular weight of the amino acids molecules, theypenetrate the surface layers of the skinand are a naturally hydroscopic material, which hasexcellent moisture binding qualitiestocondition the skin.
When amino acids are applied externally in the right formula and also taken internally it can improve the skin’s ability to stay hydrated.
Properly hydrated skin not only takes and holds cosmetics better, but looks and feels more youthful.
In talking about amino acid skin care, there are four main acids that are known to be an effective combination in building collagen. These acids are Proline, Glycine, Leucine and Lysine. Together, this formula acts as an exfoliate, works to improve moisture retention and also acts as an antioxidant, thus strengthening your skin even in harsh weather conditions.
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