I bought safe-guard (horse paste) because I mix it with three or four 15 mg tubes of cortisone cream. Which, incidentally, is on sale at Shoppers two for $5. The paste and cream are similar in consistency. They also sell empty squeeze bottles in the travel sized stuff section.
I've had no ill effects from using it on my skin, you can buy the stuff just about anywhere but if you want to do online, try Greenhawk. I almost don't want to say it out loud but I haven't had any rashes at all today. :)