I used nason auto clear from orielys it's inexpensive. Mark I have sprayed laquer for years without a respirator with zero problems and the concert sealer is worse one me than the laquer. I had to buy a respirator to use the concrete sealer and it still burns my eyes I guess I'm going to have to get a full face respirator. I'm not saying you don't need a respirator to spray laquer and I may die tomorrow but it has never bothered me but the concert sealer bothers me. I guess everyone is different.