Next up, Desir recommends applying a volume-boosting product like Living Proof's Full Thickening Mousse (£24) on your hair while it's still damp and finger-drying. Once all the product has been fully absorbed by your hair, get to blow-drying — preferably with Desir's go-to, the Dyson Supersonic Hair Dryer (£300), which he says "adds shine and reduces frizz." Of course, any ol' blow dryer will do if you don't have the cult-favourite tool in your arsenal.