With supplements, it usually comes down to personal choice and trial and error. You can take biotin and collagen together, take them apart or try something completely different.For vegans, collagen simply isn't an option. And biotin is beloved because of its vegan hair, nails and skin capabilities. If you're looking for a biotin boost, you may want to try GRO Biotin Gummies or GRO+ Advanced Gummies with CBD, which are both100% vegan.