I purchased this product as well as genucel stem cell therapy and it gave me the worst skin reaction and I do not have sensitive skin! I have tried many different skin treatments but this was the worst. The price is not worth the amount you get and they do not stand by their 'Money Back Guarantee' so if you want to try it know that if it does not work or you have a skin reaction you do not get your money back. The customer service rep was rude and accusatory when I called like it was my fault! Effectiveness This product made my skin swell and gave me red spots after.