La Prairie Cellular Treatment Foundation Powder Finish Details Powder Finish combines cream, powder, and high technology for a perfect silky matte compact foundation. Versatile as a primary foundation or as a touch up for any foundation, this light reflective, treatment based foundation goes from light to maximum coverage while providing moisturization and nourishment. La Prairie's exclusive Cellular Complex helps stimulate the skin's natural repair process, moisturizing and energizing with n.