DouxoS3 PYO Chlorhexidine Antiseptic, Antifungal Shampoo for Pets - EXP. 12/23 Chlorhexidine provides antiseptic cleansing and Ophytrium is a purified, natural ingredients from the S3 - Safe Skincare Selection. Ophytrium has been carefully selected for its high tolerance and simultaneous threefold action on the skin's ecosystem: Helps support the skin's physical barrier for supple, hydrated skin Helps support the microbial flora for healthy skin Helps soothe irritated skin