Healthvit L-Cysteine - 500 Mg 60 CapsulesHealthvit L-Cysteine is a sulfar-containing amino acid that helps synthesize keratin, a protein found in skin, hair and nails. It is also a precursor to L-glutathione, a tripeptide involved in one of the body's detoxification systems. This product provides free form L-cysteine to promote optimal absorption & assimilation.• Free Form Dietary Supplement• Promote Absorption & Assimilation• Promotes Healthy Skin, Hair & NailsIngredients: L-Cysteine (as L-Cysteine NCI) 500 mg Suggested Use: Take one to two capsules daily between meals, or as directed by a healthcare practitioner.