La Prairie Anti-Aging Emulsion SPF 30 has the following features: Light as a dream. Smooth on your daily protection, anti-aging emulsion SPF 30. It's ideal for those who prefer their moisturizer on the lighter side, without sacrificing UV protection. It helps prevent damage from harmful UV rays and free radicals and prevents moisture loss by forming an invisible film on the skin that locks in moisture and provides controlled hydration. This advanced emulsion also helps prevent fine lines and wrinkles and maintain healthy, ageless skin.