Petway Petcare Deep Cleansing Additive Shampoo Booster a lows suds naturally based cosmetic shampoo or deep cleansing naturally based shampoo booster additive. Thoroughly cleanses and deodorises the coat and skin. When used as booster additive it provides an extra deep clean and strips out dirt, grease and oil from coat. Use one part booster to two parts shampoo. May also be used in vacuum type systems.