Shop IQ Biology's Liquid Biotin Drops for hair growth, skin, and nails. This 80,000 mcg total active formula includes biotin 5,000 mcg per serving, plus collagen, keratin, and hyaluronic acid for healthier hair, stronger nails, and radiant skin. Vitamin C supports collagen synthesis and works with hyaluronic acid to improve elasticity and hydration. The sublingual liquid is easy to take and offers 98% faster absorption than pills or gummies. USA-made, non-GMO, gluten-free, berry flavored, and suitable for women and men.