Breakthrough strengthener formula contains the same Kevlar fibers used to make bullet-proof vests. The fibers instantly "weave" a powerful shield on nails, providing stronger nails in just minutes. Shielded nails become resistant to splitting, cracking, peeling and breaking. You"ll get dramatically harder, stronger and visibly healthier nails within days. Complete Money Back Guarantee: If you are not completely satisfied, return your sales receipt and the UPC Code from our package and we will refund your full purchase price within 6 to 8 weeks (valid only if purchased in USA and its possessions). MAIL TO: Nutra Nail Money Back Guarantee: c/o CCA Industries, Inc. P.O. Box #7486, East Rutherford, NJ 07073