Looking to stay natural but want to add a little insurance against damage? Then nail hardeners are the way to go. Especially formulated to help make nails longer, thicker, and more resistant to breakage, this enamel is similar to nail polish. Sally Hansen’s Diamond Strength Instant Nail Hardener ($3.99) is inexpensive and effective. Just remember to always follow the directions on the bottle, since overuse can actually harm your nails by causing flaking and cracking—the opposite of what you’re looking to achieve.
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