This product has been clinically tested for many years on different skin types and different redness conditions. The ingredients in this serum help keep the skin nourished, moisturized and soothed; help replace dead cells at a rapid rate and increase new cell production, keeping the appearance of the skin to look younger, more radiant, even-toned and soothed. The skin is also nourished and hydrated. With regular use, the redness eventually disappears.