On their website, FL claims that their products are all carbon friendly. I used the EcoTech-2 to clean the glue from the braking surface of several tubular carbon wheels all season and had no problems. I even talked to the guys from FL and asked them directly about this and they assured me that their products would not harm carbon.

As for acetone itself, I have no experience here and personally, I would follow the advice of previous posts and avoid it altogether.