Tonics and Dressings are products that are intended facilitate combing and styling of the hair. They can be applied directly to the hair or by application to the brush or comb. The safety of these products is ensured through the careful selection of ingredients that are safe for these products. Manufacturers conduct extensive safety tests to ensure that these products are safe. Among the tests conducted, are those to ensure that the products are not irritating or that they do not cause allergic reactions. As with all products, it is very important to read and follow the directions for use that are on the product. Finally, the safety of products is monitored in the market-place through reports of consumer comments and complaints. Companies include a phone number on their products where comments or complaints may be reported.