Who it's for: everyone Why it's worth it: The super lightweight Isdin Si-Nail Strengthener brushes on for quick, mess-free, and hydrating TLC on worn-down nails and cuticles. This hydrosoluble ...

Most nail strengtheners come in bottles that look a lot like nail polish. Others come as brush-on treatments with pen-like applicators. Both types are easy to use. However, if your nails are in ...

According to an editor, Sally Hansen’s Repair and Rescue Super Strength nail treatment fixes even the most damaged nails.

But brittle nails? Now that can slow you down ... Another shopper wrote: "My one complaint is that the brush applicator is too short for the contents of this bottle. This makes it hard to use ...

Working to bring weak and brittle talons "back to life", this strengthener is Trinny's secret to strong and healthy natural ...

and using the best nail strengtheners is a step that we can all take to restore them to their former glory. “Peeling, splitting, and dry cuticles are the holy trinity of winter nail woes!