Which task is NOT performed by performance ingredients?

Performance ingredients are primarily responsible for delivering specific benefits and effects to the skin, such as providing hydration, improving skin texture, or enhancing overall appearance. These ingredients are critical for the functional aspects of skincare products, as they directly influence the skin's health and condition.

The task of giving products body and texture generally falls under the category of formulation ingredients, which are designed to create the desired consistency, thickness, and feel of a product. This includes things like emulsifiers, thickeners, and stabilizers, which support the overall product formulation but do not contribute directly to the skin's performance or benefits. Therefore, while performance ingredients focus on efficacy, tasks related to body and texture are not part of their role, making this the correct answer in the context of the question.