Although cosmetics are not subject to premarket approval, FDA can take action against products that are found to cause harm. In that case, FDA may, after evaluating the problem, initiate regulatory action such as seizure or injunction against the product or the firm to stop further manufacture. Waxing and tweezing may be more painful than using a depilatory, but the results are longer lasting. Because the hair is plucked at the root, new growth is not visible for several weeks after treatment. Tweezing is impractical for large areas, however, because it is such a slow process.
Women mostly use tweezers for shaping eyebrows and removing facial hair.
Waxing, too, is mostly done to shape the eyebrows and remove hair on the chin and upper lip, says Brenda Ruffner, a cosmetologist in Rockville, Md., although, she says, many women also have their legs, underarms, and bikini line waxed. I have male clients who are bodybuilders and want their skin to look smooth for competitions. Epilatory waxes are also available over the counter for home use. They contain combinations of waxes, such as paraffin and beeswax, oils or fats, and a resin that makes the wax adhere to the skin. With hot waxing, a thin layer of heated wax is applied to the skin in the direction of the hair growth.