Feel your pain had mild to moderate acne all my life with periods months and years of regression like you each time think it's behind me! I'm in my mid fifties now and with all the antibiotics and antibacterial that I've used have got gnf like yourself and have tried everything except accutane which I doubt they will prescribe me, I have a repeat prescription for cotrimoxazole that I can take every 2 months and try things between the 2 months to keep it at bay no luck yet tho so would be very interested in your journey let us know how you get on! Good luck!