“With one pump, my skin is getting everything it needs—other than a retinoid,” says Annie Chiu, MD, attending dermatologist at Cedars-Sinai Medical Center in Los Angeles, of this serum, which contains seven antioxidants, skin-plumping hyaluronic acid, collagen-stimulating growth factors, and brightening alpha-arbutin. In an in-house study, published in a supplement to the Journal of Drugs in Dermatology in 2009, subjects who applied TNS Essential Serum twice daily for 10 days on a sun-protected area of the lower back and then were exposed to targeted UV radiation found that it minimized UV-induced redness in treated areas by up to 50 percent. Read more at elle.com.