Nutrient deficiencies may cause hair loss, so multivitamins may be better for hair growth than traditional hair supplements. Biotin, selenium, zinc, vitamins A, Bs, C, D, and E, like in OLLY’s ...

and vitamin C Promote collagen production while combating oxidative stress All it takes is one gummy a day to help your hair, skin and nails grow stronger and look more vibrant. Olly Undeniable ...