We've all heard the same old summer makeup tips: Wear less foundation, use waterproof mascara, don't use heavy moisturizers. But there has to be other ways to update and weatherproof your makeup for the sweaty season, right? We picked the brains of our talented, creative makeup artist friends for some very unexpected summer beauty tips (Kool-Aid as a lip stain? Yep, that works). Best part? They're all DIY which means they're wallet friendly too. Click through to learn some new beauty tricks for the summer and totally impress all your friends.