I find these products are high quality. I am using Solvaderm Ace Ferulic serum and Solvaderm Stemuderm anti wrinkle cream. I'm really happy with these products. My skin tone has evened out to the point I don't need makeup anymore. My skin is moisturized for 24 hr and looks supple and healthy. I live in a very dry climate so this is very important. Compared to very high end products I've tried like Rodan and Fields, I prefer Solvaderm. And there is no bad chemical smell. I'm really happy with this product and will use again. Just wish I was in the US and had US$ because with the exchange it's pricey. Shipping was good to Canada.