I received Coretox for 2 areas (forehead, between the eyebrows), but there was little effect. (The lower price is per area)
They said I could retouch the area for 9,000 won per area if I came within 2 weeks, but I didn't have time so I couldn't go.
I don't know what it would be like if it was retouched, but it seems like they put retouch as a base and added a lot of mouse droppings at first.
It was definitely different from the first time I did it somewhere else.