Help 😅 - bye bye blemish

Ni

Ladies

I need some help 😅

So the intructions of this thing says "don't shake. make sure the sediment is settled, dip a q-tip in the sediment. dip the q-tip on the pimple."

It leaves my face dotted with green stuff.. and I'm wondering.. how long do I leave it on? Do I wash it off with water or with serum? Or do I let it dry and wipe it off dry? or.. idk 🤔