I can only use all natural deodorants and I can't use anti-perspirerants at all. I haven't found Anything yet that keeps me from smelling - even throughout the course of the day (goshdarn these hot flashes ) I'm Really interested in finding the Lavilin and giving it a try. I read Bob Rolls Tour book and one of the things he mentioned was you could Smell the pelaton coming long before you see it. I figured after reading that - there probably isn't anything out there that will really hold you in 100 degree heat on a 100 mile ride!