Product question] Is this a good start for tretinoin? I've been using 1% Retinol from PC for over a year and didn't see any difference. And the girl in the pharmacy said
Obagi Medical Tretinoin Cream 0.1% - Crema alla tretinoina, 0,1% | Makeup.it
How to Use Retin A: 13 Steps (with Pictures) - wikiHow