A safe and good starter retinol at 0.1% I must say. It did make my face sensitive for the first couple of weeks which was expected. I could tell it kept my pores clean and had maybe a single pimple, I don't remember fussing about one really, that I had during the usage duration.
I bought this in a drugstore for an amount way pricier than it just is online.
Side note: This was prescribed to me by my derm when I tele-consulted about blackheads on my nose but it did little to none about that. So my concern might actually be sebacious filament or trichostasis spinulosa. I'll check with my derm again.