Sometimes, I will sweat around my armpits when it is cold out. This is not enough to cause dripping sweat, but it is enough to darken the armpit-area of my clothes and feel moist to touch. It started when I was 17, but actually went away for a couple of years and I have noticed it coming back. I would not consider this excessive sweat, just inappropriate sweat.
Using certain-dri has helped, but I would like to try and find a way to deal with this without things like that.