DL-Methionine is one of nine essential amino acids and is required for growth and tissue repair. A sulphur-containing amino acid, DL-Methionine improves the tone and pliability of skin, hair, and strengthens nails. Involved in many detoxifying processes, sulphur provided by DL-Methionine protects cells from pollutants, slows cell aging, and is essential for absorption and bio-availability of selenium and zinc.