Optical diffusers scatter light to diminish and soften appearance of lines. Instantly helps to lighten dark circles and brighten the eye area. Hyalauronic-Acid and Glycoceramides (both are humectants/moisture holders) work to hydrate and moisture-firm the skin. Chamomile and Allantoin calm, soothe, and freshen skin. Ophthalmologist-tested, Fragrance-free. Can be used alone, under or over makeup.