Originally Posted by Sunsetspawn
This is a fair misconception. Fragrances don't "develop" on skin; skin absorbs anything put on it. Different molecules will be absorbed at different rates depending on their size and structure, and different people will absorb different molecules at varying rates because everybody's skin is different. Genetics will play a large part in this, but so will conditioning, as people with better circulation will absorb fragrances more quickly. I think everyone here has probably experienced the fragrance molecules passing through the blood vessels in the tongue and actually tasting the fragrance for a solid portion of the day.
No, very little is absorbed by skin. The perfume evaporates. Lighter molecules evaporate first, then heavier ones. The extent to which people can smell the evaporation is the sillage. Evaporation also occurs differently depending on whether skin is dry or oily, warm or cool, and on certain areas of the body, and that may account for why perfumes smell different on different people. Still, I do think perfumes can seem a bit different on different people. It's probably not the perfume but a combination of the perfume and the person's natural smell.
To answer the OP, I do what you do: 4 spaces, 2 arms and 2 wrists. Anything else I get on cards (and it helps to have a book with you so that you can slip the cards into it and keep them separate; the novel I'm reading works well). So I try to keep the four spaces for perfumes I REALLY want to try.
If I do more I find the scents start to bleed into one another and that doesn't help.