I use chewing tobacco every now and then, and I always chew some before I eat my acid. Then, I put the blotters in exactly the same spot that I had the chew in. Since the chew has already cut up my lip to enhance the absorption of the nicotine, the acid absorbs quicker and easier. I can't say for sure if this makes a difference, but it always hits me hard and fast with this method whereas other methods and their speed of onset are rather inconsistent.