*** Satisfaction guaranteed. Refund for one Natural Instincts box and the value of 2 boxes of your old hair color/replacement hair color (up to $14 per box). Call 1-800-CLAIROL for details. Original receipts required within 60 days of purchase for Natural Instincts and 1 box of your old hair color/replacement. Offer through 12/31/10. Offer void in Maine. Limit 1 per household.