After toner & before moisturizer...day serums may be the link you are missing in your skincare regimen to maintain a forever youthful appearance. At Irresistibly Ageless you can find a variety of antioxidant-rich serums that tone, tighten, and increase collagen production, a natural process that declines as we age. When collagen production increases, elasticity, firmness, and texture improves. Skin becomes smooth & supple, fading the appearance of lines & wrinkles. Your age will remain a secret for years to come.