Washing Your Hair
Why you can skip it: It's tempting to suds up every day when heat and humidity make your scalp sweat more than normal. But doing so will only make your hair―which is already susceptible to dryness, due to sun and chlorine―even more parched. Instead, shampoo just twice a week. On the off days, spritz your scalp and hair with water or simply rinse in the shower. Then apply a bit of your regular styling product to damp hair and restyle.