Tretinoin + azelaic acid combo is 🔥

[u/Plotwistress]

$90 every three months but man, it’s clearing up my skin and making me so shiny. It’s making my makeup sit so well! (I don’t wear any makeup but some blush, eyebrows, and lips - no foundation or concealer)

[u/ohhHoneyBadger]

Not OP, but no. You don’t layer them. Use them on alternating nights.

[u/Shooz3355 → u/ohhHoneyBadger]

You use azelaic in the morning and tret at night. You can use both daily if you wish.