Now that I am using 3M compounds on a regular basis, I am going to use a 3M mask! I hear the aluminum oxide and silicas are not the best thing to breathe in. I am also going to wear rubber gloves as often as possible when detailing, too. I have read the MSDS reports on my stuff, and I am thinking about the future. I see some guys who practically bathe in lacquer thinner, and I wonder what 20 years of chemical exposure does to thier livers, knowwhutamean?