Interesting that insulin strongly stimulates the sebaceous glands. I always wondered why my face would get extremely oily almost immediately after eating a donut or similar pastry. I am lean and in shape so I never expected insulin would have anything to do with it.
Could you not just use an extremely high proof alcohol? Would be the same effect and you could avoid the denaturants.
I feel like 75% alcohol would evaporate too fast. Not enough time to absorb into the skin imo
Or maybe if you have a condition that affects your appearance you have a tendency to try to maximize your other aesthetic features (e.g. skin) to make up for it?