[Acne] What is the best dark spot treatment you use/tried?

My dermatologist used to prescribe me compounded creams with Hydroquinone AKA BLEACH and my skin barrier got destroyed that I decided to heal and wait it out, now that it’s healed, I’m looking for products for my hyperpigmentation left from acne/ dark spots, any ideas? Thanks! I’ve tried niacinamide and for whatever reason, I get hives when I use it.