I was expecting this product to hurt, but it doesn't at all! It is honestly very stimulating! I have only been using it for a couple of days, but I already see a difference in my fine lines, uneven skin tone & texture, my skin looks and feels smoother also! I have made this product a part of my nighttime skincare routine, so my face has time to heal overnight (not really heal, but your face does have some redness after use, the same redness that a good facial would give you afterwards.) I haven't used this on the rest of my body yet, but I am definitley going to especially because it's supposed to help with stretchmarks & other scars also! I highly recommend this product for sure!