In the context of cosmetic formulations, performance and delivery system ingredients are those that enhance how a product performs on the skin and how effectively it delivers active ingredients. Emollients serve as a prime example of this type of ingredient because they are substances that soften and smooth the skin, providing a barrier that helps retain moisture. This function not only improves the overall texture of the skin but also aids in the absorption and effectiveness of other active ingredients within a formulation.
While glycerin is a humectant that attracts moisture, it does not necessarily provide the same level of texture enhancement or barrier protection as emollients. Additives refer to a broader category that may include preservatives or fragrances, which do not directly contribute to performance in the same way. Surfactants, while important for cleansing and foaming, are primarily associated with emulsifying properties rather than enhancing skin feel or hydration.
Therefore, emollients are specifically designed to improve skin feel and effectively deliver moisture, making them key components in performance and delivery systems in cosmetics.