Do: Consult a skin care professional. Although clients may be tempted to try the latest product that is working for their friend, they should consult a professional before trying anything new. Explain to clients that only professionals can truly analyze the skin and recommend products that will be beneficial for their skin type. Don't: Skip the patch test. It is always beneficial for clients to perform a patch test before using new products, especially clients with sensitive skin. This test will help the client determine whether or not they will have a negative reaction to the product. Want to read more? Subscribe to one of our monthly plans to continue reading this article.