It is also used in non-cosmetic products such as detergents and cleansers. Beautycounter released nine products in March 2013, including facial cleansers, eye creams, and shampoo. Cleansers that have active ingredients are more suitable for oily skins to prevent breakouts. Some cleansers may incorporate fragrance or essential oils. In addition, the company utilizes biodegradable and non-toxic soaps and cleansers. They are usually used in facial cleansers and cosmetics, or in air blasting technology. Strong cleansers, including bleach and detergent should not be used on life-critical nylon components. Other denture cleaning methods include enzymes, ultrasonic cleansers and microwave exposure. However, for some people, these cleansers may irritate the skin and often provoke allergic responses. Treatments, like some colon cleansers, that cause hard stools, constipation, and straining, are not recommended. Effervescent cleansers are the most popular immersion cleansers and include alkaline peroxides, perborates and persulphates. The cleansers are readily biodegradable and non-toxic to humans or aquatic life. Tart sorbets are also served as palate cleansers between savory courses of a meal. Shellac clean-up may be done either with pure alcohol or with ammonia cleansers. Some widely used palate cleansers are sorbet, bread, apple slices, banana, biko and pickles.