Pretty unclear, some say it helps - other say it doesn't. Either way if your acne is the type that causes scarring, or wounds that need to be healed, you should avoid using it. It will create a pretty ugly looking hyperpigmentation on the scar tissue and you'll end up with undesirable results
This is from what I've read, so you should google some more about MT2 and acne to see some user logs/before + after