This Serum has clinical strength 2.5% retinol serum. This is the highest concentration of retinol that is available without a prescription. This also includes Astaxanthin and Vitamin E that are exposed to provide antioxidant properties and activate collagen and elastin production. The consistency is jelly when it comes out of the pump. Then when it is in your hand it turns into a liquid that is very thin and liquidy. When I tried this it just made my skin feel tighter and firmer. This is probably since I'm only 22, so I gave the product over to my boyfriend's mom to try. She says that it is working really well to remove wrinkles. This Serum is able to be purchased on Amazon . I was able to try this product in exchange for an honest review.