Bio-Groom's So-Gentle Hypo-Allergenic Shampoo and Conditioner are formulated to be free from perfumes, dyes and irritating chemicals. The shampoo is tearless and soap-free. The conditioner moisturizes the skin, helps prevent and relieve dryness, and rinses out fast and film free, the company reports. The products are available in 12-oz. and 1-gal. sizes.