I have yet to find an antiperspirant/deoderant that doesn't do some kind of damage to my shirts, despite claims of "won't leave residue," etc. Ban roll-on: Leaves dark spots Most regular stick deoderants: Leave caked white goo (which sometimes sparkles silver under the right light, which is aluminum dust I suppose). "Invisible" gels leave dark spots Mitchum Smart Solid: Better than others I've tried, but still seeing a bit of discoloration. There's no solution for this problem, is there? I'll have to just keep replacing shirts....or maybe just stink ...Any advice appreciated.