I've been using The Ordinary AHA 30% + BHA 2% Peeling Solution which a lot of people seem to think is v strong, and and also Vitamin C Suspension 23% + HA Spheres 2% (not together!) which again a lot of people seem to have trouble with, both are absolutely fine on my skin.
I'm upping my Retinoid from The Ordinary from 2% to 5%, what other stronger stuff could I throw at my face? Main concern is wrinkles (I'm 40) Doesn't have to be TO, but if you also have tough skin, what can you recommend? TIA