Biotin and peptides are known for their nail-strengthening properties, and the two ingredients are the stars of Sally Hansen’s best-selling nail serum. You can wear it under and over polish as well as ...

Shop TODAY independently determines what we cover and recommend. When you buy through our links, we earn a commission. Learn more. Damaged nails can be a pain. When your nails aren’t looking ...

This strengthener is the best of both worlds. It contains biotin to repair damage and promote stronger nails, while glycerin and panthenol provide hydration. Call on it if your brittle nails are ...

That’s why I like to call in the A-team every so often: nail strengtheners. Yup ... As for the strengthening ingredients, although your nails are not absorbing too much of the substance, they actually ...