Absolutely phenomenal!
I got this as an extra head cause I don’t feel comfortable using the same blade for my face and private area. I was absolutely taken aback by how well the head not only protected me, but how close the cut was. My only gripe is that after a while the metal part of the head starts to get hot and can be a tad uncomfortable, but I think that’s just me being slow. You can definitely feel confident with brio heads as you trim your privates without any real worry of nicking yourself