This week, Who What Wear Beauty Director Erin Jahns is teaching us how to protect and nourish ourselves during the sun-filled summer months. Should you switch out your moisturizer for the season? Is it safe to keep using retinol? What if chlorine has already damaged your hair? Erin's here to guide us through the expert-approved practices, products, and treatments that our future selves will thank us for using.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.