Spring Valley 10000mcg Biotin with 100mg Keratin Dietary Supplement, 60 Tablets (Pack of 2) + Your Vitamin Guide©

Great

They work really well and I see a difference in my nails.

My 22 year daughter loves it. Her dermatologist recommended biotin with keratin tablets. We found this brand on Amazon. She was taking it for 2 or 3 month. She’s saying she definitely sees the difference- thicker and shinier hair. asked me to order them again.