I want to try Ben Mears method of tanning by using 6 oz. of 85% formic, 3gallons water, Para-tan, salt, and Para-tan oil. Question is do you think I could substitute 95% formic and reduce the amount to achieve the same results ? Say maybe 4 oz. 95% instead of 6 oz. 85 % ?? Can any of you chemists give me an idea ?