ZBrushCentral

Erase texture after painting with Spotlight?

Hi guys!
I’m transitioning to Zbrush as a medium for sculpt and I’m still learning so please bear with me.

I’ve tried to look around on forums and tutorials but I can’t seem to find a way to erase the texture I projected through Spotlight.

For example I painted an iris and I’d like to retouch the borders by erasing some texture. I’ve tried ALT, CTRL ALT and SHIFT but I can’t achieve it.

Any hints?
Many thanks

Just bail out of spotlight and use polypainting instead.

thanks!