I used a sample sachet of this on my face. It felt fine putting it on and after I washed it off after 10 minutes. I put my moisturiser on (a dermologica one) as normal and went to bed. When I woke up the next morning my face was red and sore and had come up in a rash. After 24 hours the redness had gone down but still itchy and had a rash. Really disappointed as i really like dermalogica products!