Cosmedix Define Anti-Aging Treatment with Hydroxy Acids & Retinol - 1.5 oz Facial Serum for Wrinkles & Fine Lines - Perfect for Nighttime Skincare Routine

I have tried so very many retinol products. This is the one I keep coming back to time and again. Not only does it work, but it doesn't break the bank either. I use it in conjunction with glycolic acid pads at night to amp up the effect. I also use a very nice moisturizer when I use it. I do this about four days a week. Oh, and I love that the company is cruelty free!