Cetrimonium bromide is absorbed into the skin through the dermis, although not quickly. Based on the available evidence, cetrimonium bromide, cetrimonium chloride, and steartrimonium chloride are regarded safe for use in rinse-off cosmetic products but are only safe in leave-on products at concentrations of up to 0.25 percent. Higher concentrations can be toxic. The safety of cetrimonium salts for use in bath products has not been established. However, because of its high concentration and surfactant properties, it is likely that cetrimonium salts would be irritants to skin in baths. Its use in shower products is permitted. There is some evidence that cetrimonium salts may cause contact dermatitis but more research is needed in this area. Shower gels, creams, and lotions containing cetrimonium salts are easily washed off during bathing or showering. This allows the product to work effectively while providing a pleasant washcloth feel on the skin. Cetrimonium compounds are effective foaming agents used at low levels (0.5% or less) in shampoos, body washes, bubble baths, and other household products. They help create a clean feeling with less soap or no soap at all by helping dissolve dirt and oil from the hair or skin. Cetrimonium salts are also used as antistatic agents in fabrics, especially clothing for children.