Retin-A (tretinoin) 0,05% is indeed double strenght in order to cure real hardcore acne. It may be from too much trenbolone for example, but thats no problem. Retin -A will do the job! its a form of vitamin A that helps the skin renew itself pefectly.
The Retin-A and Avita brands of tretinoin are used to treat acne. The Renova brand of tretinoin is used to reduce the appearance of fine wrinkles and mottled skin discoloration, and to make rough facial skin feel smoother.