All welcome to use: Helps minimise the signs of ageing you can see, and the ones you can\'t see yet—all while strengthening the skin\'s protective barrier. Up to 250% more renewing power than traditional retinol with Retinol Tri-Active Technology. Unretouched Real Results Results in just 4 weeks: 83% noticed firmer, more supple skin 80% saw increased radiance and glow\" Murad is a PETA certified cruelty-free brand; they do not test any of their products on animals.