What are the two accepted types of ingredients in cosmetic formulations?

The two accepted types of ingredients in cosmetic formulations are functional and performance ingredients. Functional ingredients are responsible for the product's consistency and stability, helping to create the desired texture and form. They may include emulsifiers, preservatives, and binders, which facilitate the proper application and longevity of the product.

On the other hand, performance ingredients are the active elements that deliver specific benefits to the skin, such as moisturizing, anti-aging, or soothing effects. These ingredients are what give the product its efficacy and are often the main reason consumers choose a particular formulation.

Understanding the distinction between functional and performance ingredients is essential for formulating effective cosmetic products that not only meet regulatory standards but also provide the intended benefits to users. The other options, while they mention types of ingredients, do not encapsulate the broader categories recognized in cosmetic science as effectively as functional and performance do.