For those who use crystals, how do you use them? Add them to a bottle? Do they dissolve? I'm thinking of trying them out, but have no idea how. Any advice is appreciated.
Yep. They just dissolve. You can shake them up to make them dissolve faster, but I don't think it's necessary unless you're going to use it right then. I'd start by adding just one sliver at a time until you start getting the result you're looking for. It's easy to add more menthol but impossible to remove it after the fact.
Added a boat load to some AS leftovers today. Put some on 5 hours after a shave and my chin was burning (in a good way) Menthol crystals are great and as rightly suggested by AJ just add one at a time. As I have been using them for some time this qualifies me to be a complete idiot with them.
I bought mine on eBay and they arrived in good time. I think I have more than enough to never have to order again. I use the crystals in a couple of AS splashes that I like because I love a menthol splash in the warm weather.