My 10 year old female French bulldog is allergic to everything and the reactions manifest on her skin - hives, all-over hair loss, and raging staph infections. When DVM products disappeared from the market, taking their 4% Chlor-Hex shampoo with them, I was devastated, because the shampoo kept her skin clear and her staph infections controlled. Vet prescribed some worthless 3% formula from Virbac. After two years of daily baths, oral antibiotics, oral steroids, injectable antibiotics, injectable steroids, protein-specific diets, pathology reports, and bleach baths, a 4% Chlor-hex shampoo is finally back on the market. My Frenchie has hair again and I have my sanity and some extra $$ in my wallet. This shampoo formula is a primary component of her maintenance regimen. Thank you!