/fa/ - Fashion

New/fa/g here,
Something like 95% of all deodorants and perfumes I ever try on become denatured very quickly and no longer smell good. Over the years I've tried 5-6 different kinds of CK deo sticks and the only one that maintains an agreeable smell after prolonged use is CK One Shock. Every other deodorant I have used genuinely smells unpleasant to me after 30 minutes/1 hour, especially if I sweat.
I vaguely remember hearing talk about skin acidity being to blame. What gives?