Restful sleep is essential for us. The body regenerates at night - and so does our skin. It rejuvenates, produces more collagen and growth hormones, while the concentration of the skin-damaging stress hormone cortisol decreases. Dr. Barbara Sturm's NIGHT SERUM supports this nightly renewal process while you sleep. Cotton thistle extract has a regenerative effect and increases the protective barrier, as well as the moisture level of dry, stressed skin. Senna Alata Extract helps fight premature photo-aging caused by UV rays with its antioxidant properties. Poria Cocos and Beta-Glucan work together to soothe irritation, while anti-aging power ingredient Purslane mitigates oxidative stress. Dr. Sturm's unique, highly concentrated blend of high and low molecular weight hyaluronic acid can bind up to 1000 times its own weight in water, replenishing moisture stores overnight. Dr. Sturm's NIGHT SERUM will surprise you in the morning with fresher, smoother and healthier skin. This night serum is also available in pre-dosed single ampoules.