I have pretty sensitive skin and can often suffer with prickly heat, but last holiday to the Dom Rep where it was about 30 - 35 in the shade every day, I did not suffer at all. Guess what, I did not shower off any of the 3 different types of mozzie sprays I tried of a night, before I put my sun lotion on. Not usually 3 all at once but varying degrees of Lemon body cream, Deet, Mozzie Milk and also a bit of Skin so Soft for good measure. The little blighters usually love me! Now I don't really tan (too pale) but my husband who was white as a sheet when he went away (it was November) came back really dark and he never showers in the morning either ( I also made sure he was Mozzie guarded of a night) So, not convinced of that argument either!