What property does magnesium stearate provide to cosmetic formulations?

Magnesium stearate is commonly included in cosmetic formulations due to its ability to improve texture and adherence of products on the skin. One of its key properties is that it aids in the ability of makeup products to cling to the skin. This adhesion is crucial for achieving long-lasting wear and performance in cosmetics. Additionally, magnesium stearate can contribute to creating a barrier that offers some water-resistant qualities, helping products to withstand moisture and environmental exposure.

The other options, while they do reference properties that can be desirable in cosmetics, do not accurately describe the specific role of magnesium stearate. For instance, viscosity pertains to the thickness of a formulation, which magnesium stearate does influence, but its primary effect is more closely related to adhesion. Similarly, while other ingredients might be responsible for UV absorption and enhancing shine, magnesium stearate does not serve these functions effectively in formulations.