Hi guys..I have to say I know how annoying this is. If I was in a situation like being down in the underground [subways] in London .....the heat there is just cloying at times and I`d instantly find the sweat teeming out of me.... I`m very sensitive to that type of clammy heat, yet I can easily sit out on a beach in Spain without any issue ! Really `odd`. Thinking back to my all-poly [Salon] days, the thing was bonded to the head fully [all-over] and I was often doing exercise in the gym and sweating heavily yet the bond was never affected until after the 3rd week at the earliest. I guess there were so many coats [3] of glue applied, that it simply blocked the pores and prevented sweat from coming out...not an ideal scenario I guess but the bonds never failed...maybe for really warmer/humid weather, the solution is to do your bond in a cool, [air-conditioned if possible] room where you`re less likely to be even lightly sweating when applying your glue,and then apply an extra layer or two. This will mean probably a shorter time-interval between de/re-bonds & longer/more laborious clean-up due to having extra glue on, but it might overcome the sweating in warm humid climates which simply can`t be avoided.Having the scalp perfectly clean and dry at the outset will ensure good adhesion..... I guess it`s a case of try it and see.... Paul.