If you are concerned about humidity consider purchasing John Frieda Frizz Ease Moisture Barrier Firm Hold Hairspray. This stuff works wonders on hair prone to negative effects from humidity! I have naturally curly hair, and my hair usually grows 4x it's normal size when I'm in a lot of humidity. However, when ever I use this hairspray throughout my hair...my hair stays put and doesn't grow! I would definitely recommend this product to anyone concerned about humidity.