The Aftershave looks exactly the same as before, but appears to have had some exotic pheromones added - to the point where any half plausible disguise worn will seem exponentially more real to those addressing you. Generally speaking, you at least need to be approximately the right shape for it to work. So Leland with a bit of preparation could pass for any human shaped humanoid.

It doesn't work to disguise yourself as a specific individual that the person you are trying to fool knows, but can easily work to appear as different species, ethnicity, age, gender etc