Hello, I talked with a rep from peel away and I have lead paint I am stripping so he told me that PA7 would work best for me since it leaves no moisture content and will not darken the wood as PA1 would slightly darken it. He also told me I could neutralize by wiping it lightly with vinegar, letting it dry, lightly sand and it will be ready for the finish :)). If you have any questions just give them a call they are very helpful and generous with the info. There Phone #(212) 869-6350. Good Luck :))