I've been using Alpha products since they hit the market over two decades ago (when they were Alpha Hydrox) and the very first AHAs on the market. It's been a staple in my routine ever since, and you can look at my pics to see what this, strong sunscreen, and a few other potions (primarily Paula's Choice serums) have done for a 45 yo smoker (the b&w pic does have airbrushing, I'll admit, if anyone looks) who has never had a chemical peel, been in a tanning bed, or had any plastic surgery. I'm proof it's THE Holy Grail product along with a properly pH'd BHA, which declogs pores & prevents blackheads.
I use this first, then a BHA (unless my skin needs me to ease off, which happens in cold weather), a serum, Olay Total Effects 7 in the pump container (best deal for a whopping dose of skin-repairing niacinamide), and maybe Cerave Healing Ointment or vaseline under my eyes, around my mouth and along my nose.
If that's too much for you, by all means make this one the start of your nightly routine followed by whatever potion you like. It exfoliates skin, thus turning cells over faster & reducing fine lines, pores, imperfections & discolorations. It takes skin six weeks to turn over, so don't expect immediate results from anything not prescribed by a doctor. It will sting at first application, and this may subside for you, or you may be like me and forever experience at least an initial tingle.
WARNING: if you're new to using AHAs, I strongly recommend beginning with a 8-10% AHA solution because 14% is almost the strongest you can go without a prescription. It's easy to go overboard & end up causing more harm than good, then blaming the product. Gentle is always the key, as you can always build up but not build down.