So when should we be applying heat protection spray to our hair anyway? "I would recommend adding to towel-dried and combed through hair before using a hairdryer and again before using styling tools," advised Bromell. Yes, that's right—we should be applying it to our heat protection sprays to both wet and dry strands.
Earnshaw agrees: "We’ve been conditioned to only think of heat protectants as being used on wet hair, but ideally, you can use a multi-functional protectant like Amika The Shield (£20), which can be used at any stage of the styling process. It can be applied to wet hair prior to blow-drying or to dry hair prior to curling or straightening, as long as heat is used to activate the 24-hour anti-humidity, you’re golden!"