I have sensitive skin and lots of acne scars so thought of trying this product. The mistake I made was to use it directly using on my face without diluting it and since this was my first acid use, it kinda burnt my skin. It was tingling whole night and I had to use an ice pack to sooth it. But this is not the product issue but the usage issue, so pls be very careful if this is your first acid. It is great to use it though!