Reviva Dmae Firming Fluid Concentrate for All Skin Types. Helps Skin Appear Firmer & Tighter. This is a Natural Product, Not Tested on Animals, and is Cruelty Free. DMAE helps skin to appear tighter and firmer while improving the appearance of throat and facial areas. It also helps skin appear more youthful. Reviva Labs creates skin care that offers visible results. It's why skin care fans adore our cruelty-free products.