"i am 18 years old, and had severe acne on my cheeks and chin area since i was about 14. acne was the hardest thing i have ever went through and was ruining my confidence. i went to the dermatologist and got prescribed .1% tretinoin cream and doxycycline 100mg twice a day. i was on doxy for 4 months and my acne stayed exactly the same. i always read the review on this site for this product, and promised myself i would write one. i did not work for me, but that doesn&#039;t mean it won&#039;t work for you. i have been off doxy for about four weeks now and i have zero pimples. i do have a lot of redness and lots of acne scars, but use mederma and have had one laser treatment for scars and am planning on having 2 more. stay positive... it gets better!!"