Dress cool

 

Cotton is the go-to material as it allows the body to breathe and absorbs excess sweat. Good alternatives are linen and clothes made out of other natural fibres. Avoid synthetic materials such as polyester.

If you perspire a lot, stay away from light-coloured clothes as sweat stains show easily. However, bright white fabric is actually quite effective at hiding perspiration patches. Also, covering up does not sound like a thing to do in a heatwave, but wearing long sleeves protects your skin. But, again, it depends on what material your outfit is made from.

How effective?  I wore a long-sleeve white cotton shirt and was out in the blazing sun for a day. It was more comfortable than when I was sweating it out in a sleeveless shirt made of rayon.