Cystiphane Biorga has a double action to maintain healthy hair and nails thanks to its formula enriched with innovative active ingredients: Helps hair and nails regain strength and vitality. It acts as a protective barrier against external elements. L-cystine promotes hair and nail growth. Zinc restores the strength and vitality of hair and nails, protecting cells against oxidative stress and protecting nails and hair against environmental aggressions. Composition L-Cystine, arginine, zinc, vitamin B6 ingredients L-cystine; Bulking agent: microcrystalline cellulose, talc; Coating agent: hydroxypropylmethylcellulose; zinc (zinc sulfate); Hardener: carboxymethylcellulose; Coating agent: fatty acids; Anti-caking agent: magnesium stearate; L-arginine; Dyes: riboflavin; Vitamin B6 (pyridoxine hydrochloride); Coating agent: carnauba wax.