hi..thanks for your query.
has to be taken in the recommended dosage and recommended time to cause a good remission.Also it is possible for a relapse and a repeat course to be needed.
If you want to start with Retino A cream now ,you can use it once daily ,preferably at night or with proper clothing to avoid UV exposure. For now you can use only one agent and see how it improves.If you feel ,there is no much change , you can visit a dermatologist
to start using Oral antibiotics
for the same.
Hope this helps.Take care!