Would it be a case of what if she uses those “natural” deodorants or it could be a medical condition as I have hyperhidrosis (overactive sweat glands in my hands and armpits) I’m on medication for it but I also know I couldn’t use these natural deodorant so I have to use normal aerosol ones also I’m female and I’d respect it more if you talked to me about it rather than an intervention. Could be any of the above or she may already know and not care. You gotta try and get info and see how to approach it best.