If you have sensitive or colored hair, you know that pools are your nemesis, making discoloration and brittle ends inevitable. This may no longer be the case thanks to hair genius Philip Kingsley’s Swim Cap, $33, a deep conditioner that actually waterproofs your strands. The idea is you apply the cream under your swimming cap pre-dip, and your hair absorbs the protective formula first and guards against the harsh effects of chlorine. It’s also a good option for beach-goers looking for protection against sun, wind, and salt water. As a regular swimmer, I’ve found that the product hasn’t tampered at all with my blond hue, and even leaves my hair softer and shinier after I rinse and blow-dry it. I’d recommend Swim Cap for non-swimmers as well looking for a good weekly hair conditioning treatment.