This from an insert in May's issue of InStyle magazine: "Special Offer: Purchase any CoverGirl product and email a photo of your receipt, your name and mailing address to to receive a copy of InStyle's book, The New Secrets of Style.

Small print: While supplies last. Limit one per customer. Consumers may also mail a copy of the receipt to COVERGIRL GWP c/o InStyle, 1271 Avenue of the Americas, Suite 24-401, New York, NY 10020. Please allow 4-6 weeks for shipping. Purchase of qualifying products must be made between 4/13/12 and 6/14/12. Proofs of purchase must be received by 6/29/12. InStyle reserves the right to disqualify any submission for any reason including suspicion of fraud. Some restrictions apply. Void where prohibited by law.