What is the Retinol Tri-Active Technology? A proprietary ingredient development by Dr. Murad and his expert team. This innovation combines a potent, fast-acting retinol with a time-released retinol that acts like a slow drip, gradually delivering retinol to minimize irritation and maximize visible results. Additionally, a booster enhances retinol's ability to increase the cell turnover rate – one of retinol's primary effects – for a more youthful-looking skin, fewer fine lines, and improved radiance.