Collagen Tripeptide Complex capsules by DoSe is an expertly formulated collagen supplement to help support the health of skin, hair, bone, joint, and nails. This collagen supplement also contains science backed nutrients including Vitamin C, Zinc, and Biotin. Vitamin C contributes to normal collagen formation for the normal function of skin. Zinc contributes to the maintenance of normal skin, hair, and nails. Biotin contributes to the maintenance of normal skin and normal hair. Together, this blend supports your daily wellness routine.