Thanks to a special oxygen technology, air can penetrate your Orly Breathable Treatment + Color, $9, manicure to reach your nails. This, as well as argan oil and vitamins, helps them grow faster and better.

Deborah Lippmann Iconic Treatment Enriched Nail Polish, $18, contains biotin for stronger nails and green tea extract for protection against environmental aggressors. And there's no compromising color or shine.