What is a contraindication for using chemical depilatories?

When considering the use of chemical depilatories, individuals with sensitive skin or known allergies represent a significant contraindication. Chemical depilatories work by breaking down the protein structure of hair, which can also irritate or damage the skin, especially in those who are predisposed to sensitivity or have allergic reactions to the ingredients present in the products.

Using these products on sensitive skin can lead to severe irritations, rashes, or even chemical burns. Therefore, it is crucial to perform a patch test beforehand for those with sensitive skin or allergies to ensure that the product is safe for use on their skin. In contrast, individuals with normal, dry, or oily skin might tolerate the products better, although care should still be taken with any skin type to avoid adverse reactions.