What it is:An eyelid serum and primer that topically replenishes Glutathione to the skin. What it is formulated to do:Acyl-Glutathione Eye Lid Serum features scientifically formulated ingredients to tighten and firm the upper eyelid area. It also works on tightening the 360-degree orbital rim while smoothing creases and improving the appearance of redness and dark circles. By acting as a primer to help makeup glide on more smoothly, this serum instantly enhances the application of makeup, improving its wear throughout the day. Light in texture and fast absorbing, it delivers visibly instant tightening and smoothing effects.What it is formulated WITHOUT:- ParabensWhat else you need to know: Acyl-Glutathione (pronounced: ay-sil gloo-ta-thigh-on), addresses the accelerated signs of aging, including severe dryness, extreme loss of elasticity, deep lines and wrinkles, and fragile, thin-looking skin.Research results:Based on a 4-week (or 30 day) period of use:- 80% saw improvement in the appearance of dark circles- 76% saw improvement in the appearance of creases above their eyes- 73% saw improvement in the tightness & firmness of the eye lid skin- 73% saw improvement in the redness of their eyelids- 76% said their upper eye lids looked smoother- 78% agreed this product helped their make-up go on more smoothly- 76% agreed this product worked well as a primer to enhance their make-up application and wear