If you don't mind mail order, I highly recommend acne.org's AHA+ lotion (in a very large tube). I alternate nights of this procuct with tretinoin, and it has made my old acne marks fade to practically nothing (even I have to look really closely to see them) and it has lightened sun/age spots for me too but very gradually.
Location: Texas
Type: 3b/3c (i), below shoulder length.
CO wash: A-O GPB LYY, Salon Care Honey Almond, Devacurl OC, Acure Argan Stem Cell+Argan Oil, Mill Creek Botanicals Keratin Repair
Leave-ins: BWC, KCKT, cno overnight
Styling: BRHG, MGA Sculpting Gel, A-O Mandarin Magic Gel, LOTD AVG, LALSG
DT: Kiehl's Olive Fruit Oil Deeply Repairative Hair Pak, Curl Junkie Deep Fix, Briogeo Don't Despair Repair!