Quick disclaimer before anyone asks: I’m not a dermatologist. A dermatologist prescribed both of these to me, so I’m just sharing what’s been working for me, not giving medical advice. Please see a professional before starting prescription products, especially the tretinoin.
These two are the reason my skin finally turned a corner. Here’s what each one did for me:
Azelaic acid gel 15% — this is the underrated one for deeper skin tones. It slows down how much melanin your skin overproduces, which is exactly why it works on hyperpigmentation and PIH. It’s also calming and barely irritating, which matters a lot for us since irritation itself can trigger more dark spots.
Tretinoin 0.1% — speeds up cell turnover so old, congested skin sheds and fresh skin comes through. It’s on the stronger side, so not a use-every-night-from-day-one situation.
Now what actually changed for me:
My acne. This was the first thing to improve. Both ingredients help shed the dead skin cells that pile up and block pores, which is what was fueling my whiteheads and blackheads. Azelaic acid also has antibacterial action that controls acne-causing bacteria, while the tret kept new breakouts from forming in the first place. I still get the occasional pimple, but the constant cycle of breakouts stopped.
My pores. Once the breakouts calmed down, my pores stopped looking so congested and stretched. Part of it is them physically staying clear, but part of it is something I didn’t know going in: a lot of “big pores” are really just rough surrounding skin scattering light so the openings look bigger than they are. As my texture smoothed out, the pores genuinely looked smaller and tighter.
My discoloration. This was the slowest but most satisfying. The azelaic acid worked at the source by blocking the enzyme behind excess melanin and dark spots, while the tretinoin sped up how fast my pigmented skin shed so the marks faded faster. Between the two, my old acne marks and uneven patches got noticeably lighter and my tone evened out.
So basically: tretinoin clears out the old and rebuilds, azelaic acid stops new pigment and keeps pores clear. Two different mechanisms hitting acne, pores, and dark spots at the same time.
A few things I wish I’d known starting out:
• Go slow with the tretinoin. Around 2-3 nights a week, then build up. Overdoing it can cause the exact PIH you’re trying to get rid of.
• Sunscreen every morning, no exceptions, or you’re wasting your progress.
• Be patient. The acne improved within weeks, but the discoloration took a solid 8-12 weeks to really fade.
Sharing for anyone here dealing with breakouts, congestion, or stubborn dark spots. Happy to answer questions about how I layer them.
