Hi yummymummy,
I travel long haul and must admit I have never noticed any difference with the effectiveness of my deodourant from being packed in my hold suitcase.

Do you mean it's less effective as a deodourant or the spray doesn't work as well? Pressurization of the hold might affect the spray in some way after 10 hours (all I know about aerosols is that when the factory catches fire anyone living nearby gets evacuated!!) but I don't seen how it can affect the stuff once it's in your skin - although if the pressure has been affected it may put less out than normal.

I found that too, so for the last few years I have taken roll-on anti-perspirant with me.

I just mean it doesn't work as well, i think it still sprayed the same amount out, but it wasnt as good .

Thanks for the tip Sydney, i think i will do that.

People probably sweat more in Hotter countries so it has to work harder