I also have the hormonal breakouts on my chin and they are very annoying. im 42 and never until 7 years ago broke out. i feel your pain. as a matter of fact,because of my skin problems, and my interest in skin, i decided to become an esthetician.
first, if your blemishes are the deep type and peri-menopausal many times (and for me) oral meds are the the only thing that will clear them up(oral antibiotic...)aha, bha, retin-a, glycolics,and prescription meds can only go so deep and will help with the comedones, papules and pustules, but do very little for deep blemishes. there is a supplement i used from dermadoctor.dot.com(for the life of me i cant remember the name of it) that did help, but was costly(30 to 60 monthly). you could try that if you dont want to be put on a prescription.
second, as for the retin-a, i had problems with that at first also for many months, until i tried this method. a low dose to start, and then only once a week.when your skin adjusts, 2x... it takes a long time to move to daily, if ever. 3 to 4 x a week for many is plenty.
also, and this is what helped the most, put a non active moisturizer on first. wait 20 min to a half hour then put the retin-a on. (i use emu oil as it helps the retin-a from penetrating to quickly, if you put the retin-a on first then the emu, it will do the opposite)
i hope this helps some