 But since we discovered she has sensitive skin, we've been playing detective, too. We thought the problem was our puppy. But it was actually our old detergent. Aha. So we switched to Tide Free and Gentle. Tide cleans better than the leading competitive free detergent, and it doesn't leave behind irritating residues. Plus, Tide Free and Gentle has no dyes or perfumes, so it's gentle on her skin. Case closed. If it's got to be clean, it's got to be Tide Free and Gentle.