Avon's recent investment in hair care technology research has yielded a breakthrough product: Lotus Shield Frizz Control.  I can't vouch for this product personally — I haven't had enough hair to have a bad hair day in over a decade. But I've had good to rave reports on this from customers.  Like a lotus leaf repels water, this silicone-based product kills frizz for three days — and is effective in humidity up to 97%.  Intro priced at $9.99, get free shipping with coupon code "FSANY"