I used this after the Dermafix cleanser and before the Vitamin A Proportionate. It stung my skin and made it a bit red, but it wasn’t unbearable. In fact, I quite liked the sting – it felt like something was happening. Using the three products together for a month had a noticeable impact on my skin. It’s not a magic cure for pigmentation (then again, what is?) but I definitely felt like my pigmentation was less noticeable and the texture of my skin was much better.