JULIE'S CHOICE Derma Beauty Collagen Biotin Ampoule 25ml is a concentrated revitalizing serum that combines collagen, biotin, and hyaluronic acid to firm the skin, improve its elasticity, and strengthen hair and nails. Its lightweight and highly absorbable formula penetrates deeply to intensely hydrate and promote a radiant complexion. Ideal for tired or lackluster skin, this treatment boosts cell regeneration while providing an immediate smoothing effect.