Shampoo: Aveeno Nourish + Strengthen Shampoo
Waterproof shampoo? That's right—the wheat protein in this one isn't water-soluble, so parched strands soak it up and look
healthier. When tousled-and-sexy beach hair takes a hard right into ragged and crunchy—this is the shampoo for you.
Buy it: $7; aveeno.com for retailers.