<s>[INST] hi. i am 21 years old facing acne . my dermatologist gave me isotrex to apply on my face and to eat supramycin. i did it for 3 months and found it really effective but once my acne stopped it again started to occur. my question is can i apply isotrex for life long so that my acne never comes out again. [/INST] hi welcome, it is better not use the isotrex longer time. if more acne are there you try some alternate methods instead of this drug. consult one beautician and undergo face wash first in order to clean. then try some homeopathic medicines thanking you </s>