How effective is the laser acne treatment?

It varies: For moderate acne with red bumps and some white heads, it can work very well with repeated treatments....Ie it is not a cure. For cystic acne it does not work as well for everybody, but it helps. For comedonal acne, ie just black heads...Not very effective. Don't expect a cure, but lasers can help a lot. Combined with a chemical called ala, aka photodynamic therapy, it works even better.

Effective: It depends on the acne and the laser used. It can be very effective though with the correct laser and settings.