Summer heat, sun, saltwater, and chlorine can obviously do a number on hair. Do you have any tips on how to get dry, frizzy hair back to a healthier condition for fall?

"During the summer months, we tend to style our hair with thermal tools a bit less... which is a positive," says David. "However, all of those hours in the sun have done plenty of damage. Generally, I tell my clients that if they are not using professional products, I would prefer they use something organic and moisturizing. Professional products have a lot of science and research behind them, so what you go home with is a gentle and safe, pH-balanced product that brings your hair back to life."

SheaMoisture Organic Raw Shea Butter Moisture Shampoo, $10, available at Walgreens.