NATURTREU® Hair Vitamins 375mg 120 CapsulesSkin hair nails capsules: biotin, zinc and selenium contribute to the maintenance of normal skin and hair. Silicon is essential for the collagen and elastin production of the body. High dose silicone: with a whole 375 mg silica from bamboo freckles extract, you receive high dosage silicon in capsules. Silica is the biologically available compound of silicon and water. Improved formula: hair capsules supplemented with zinc biotin selenium, copper, oak