I've used Alpha Skin Care products for over 20 years. Since they were originally a Colorado company, I used to be able to get their products at my local Colorado Walgreens!! The Essential Renewal Cream 10% is the one cream I cannot be without. I buy 2 or 3 at a time and store them in the refrigerator until I need them. I don't know if it's good genes and/or the Alpha products (probably both) but I am 71 and I'm lucky/grateful to be told that I don't look older than 60. Thank you, Alpha Skin Care. I am a customer for life!!! Debora