As collagen experts, we are 100% committed to telling you the truth, the whole truth, and nothing but the truth! We won’t ply you with marketing BS just to get a sale. Our loyal customers who love our collagen products report stronger nails instead of thicker ones. However, if by thicker nails you mean nails that are less likely to break, crack or look weak, collagen can ‘thicken’ nails! Many of our customers use collagen for brittle nails. They tell us how it improves strength and integrity, giving them kitty-cat claws they love. So, whether you want Bovine Collagen or Marine Collagen for nails, we’ve got you covered!