How can I keep my curls defined and not frizzy in the summer?
The best way to keep curls from frizzing in the summer is to make sure your hair is completely dry before going out. When your hair is dry, the cuticle is sealed, but when it's still damp, humidity molecules can wedge themselves between the layers of the cuticle, which causes frizz. Also, use an antihumectant as a finisher and when styling.
Try Blow Weather Girl, $22; blowny.com