Enter code DHCDUO15 in Promo Code field at checkout to receive 15% off DHC products when you purchase 2 full-size DHC products under one order. Promotional code is only valid for DHC products. Cannot be combined with other discounts, sale items, offers, or promotional codes. Previous purchases do not qualify. Offer valid from July 18th at 12:00 AM through 11:59 PM EST July 31st .