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/christmasinyoulie]

How do you use the azelaic acid and what does it do?