RETIVANCE® SKIN REJUVENATING COMPLEX By Obagi. This is my preferred retinol that use every other night. It’s a PM serum that you use after you cleanse and before you apply your moisturizer. Retinols are to help decrease fine lines and clear up blemishes and decrease pore size. This is a holy grail product! Always use a daily spf because you can burn easier when using this product. LTKWedding LTKBeauty LTKStyleTip