Introducing SkinCeuticals Serum Samples by your skin concern. Get a FREE serum sample based on your skin care needs. To claim your FREE Sample just fill in your skin concerns and your contact information in the simple online form to receive your complimentary samples from SkinCeuticals via USPS. This offer valid while supplies last. Limit one complimentary sample per customer. Offer valid to residents of the contiguous United States, only.