Increase Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Sort by editor review Added to wishlistRemoved from wishlist 0 Add to compare Biotin Hair Thickening Serum for Men and Women – Intense Strengthening Treatment Product with Natural Botanical Oil Blend to Help Boost Thin Hair – Repair Thinning Hair, Increase Volume and Shine Added to wishlistRemoved from wishlist 0 Add to compare $14.99