i use peterthomasroth. at first, when my beautician was explaining to me about the products, i dont believe. as there is so many products now in the market, there is no one product that can say 72% reduction in wrinkle size. (luckily) she didnt force me to buy that time. but she gave me samples. i tried out: cucumber mask, un-wrinkle eye, buffing beads. and oh my, i fell in love with the product. and one product that i highly recommend is the viz1000. according to my beautician it has dont know more than 70% of hyaluronic acid (most product only have maximum 10%). now, after using the product for about 6 months, my complexion improve. less scars, and even my boyfriend notices the difference! i am a satisfied user of ptr!