After months of heat styling, chlorine, and sun damage, your hair is probably feeling more like straw than silk right now. Though it sounds like a disgusting concoction, it's worth trying Instagrammer itsme.ana's easy DIY mask.
The only ingredients you'll need are half a cup of beer, a tablespoon of safflower oil, and a raw egg. Mix them together and apply to dry hair, then rinse off after 30 minutes to reveal a glossy mane.
Here's why it works: the proteins in the beer's hops and the egg will fortify your damaged hair and add shine, while the oil will infuse your strands with deep moisture. But even Ana admits that it'll make your hair smell like rotten eggs as you wait for the mask to dry.
If you're not willing to subject yourself to that stench, try Bröö's Thickening Conditioner (£6). It contains real beer, so you'll get many of the same benefits that this mask provides but with the added bonus of a pleasant, creamsicle-like scent.