Structural Support Promotes Healthy Skin, Hair and Nails* With Vitamin B-6 and C NOW? L-Cysteine is a non-essential amino acid that is an important component of hair, nails and the keratin of the skin. L-Cysteine stabilizes protein structure and aids in the formation of collagen, thereby promoting healthy skin, hair and nail texture and elasticity.*
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Now Foods L-Cysteine – 500 mg- 100 tab