This product uses next-generation retinoid active technologies which have been shown to achieve better reduction in signs of aging than retinol without irritation. These technologies cannot be compared directly with retinol itself in terms of concentration because they include a different retinoid molecule, in a similar way that Retinol cannot be compared with Retinoic Acid in terms of concentration. If you have an interest in a retinol product, please refer to our Retinol portfolio above which products contain pure retinol and cost less since many retinol technologies cost less than their next-generation counterparts like Granactive Retinoid.