"i went to my dermatologist after suffering throughout my teenage years with acne. they prescribed me duac gel. the first few days of using it my skin was fine, apart from a few red, patchy areas of skin. in my second week of using it i was in constant pain. my face was inflamed, swollen, incredibly dry and unbearably sore. i decided to stop using it and allowed my skin to recover from my traumatic ordeal, i had honestly never felt worse about myself. i then decided to give it another go, but this time using it for an hour a day, every other day. once i felt my skin had acclimatised i did an hour every day. now i can apply it over night without any redness or dryness. my skin has cleared up so much, but i recommend acclimatising your skin."