What should be used to apply lotions and powders?

The most appropriate choice for applying lotions and powders is a sterile cotton ball. Cotton balls provide a clean and effective means of application, ensuring that the products are applied smoothly and evenly. Using a sterile cotton ball also emphasizes hygiene, which is vital in cosmetology to prevent contamination and the spread of bacteria.

While a clean brush is a valid method for application, it may not provide the same level of sterility as a cotton ball, particularly in certain situations. A sponge can be useful for applying different types of products, but it may not always remain uncontaminated, especially if it is not regularly cleaned or replaced. A gloved hand can serve as a barrier for hygienic application but might not be the best choice for all product types, as some lotions and powders are better applied with lighter, more delicate tools such as a cotton ball. Therefore, a sterile cotton ball stands out as the best option in maintaining both cleanliness and effective application.