# Sculpting: smooth brush

I'm following an Andrew Price sculpting tutorial and at around 26:00min he uses the smooth brush to smooth out the horn of the anvil. When I try to do this, I get some artifacts instead of smoothed out geometry. Any reason to why this is happening?

I have tried retopologizing my mesh (which I suspect consists mainly out of triangles (dyntopo)) with ctrl+f > tris to quads, but when I tried the smoothing brush on this model I got the same result...idk

Does anyone know a solution to this?