So, my friend and I were discussing Patou Pour Homme, and the rarity of it, and we noticed some aftershaves for sale on eBay, etc.

So, he proposed that allowing an aftershave to evaporate over a bit of time (a month at the most) would bring the strength up to an EdT or such. He talked about perhaps using cheesecloth to help the evaporation.

I interjected, saying that this could damage the fragrance. Theoretically, would this work?