Spoiler: your once beloved hair care product is the issue
They say blondes have more fun but have you ever been blonde? It's exhausting.
No matter how talented your colourist may be, there's still an overwhelming amount of demons (the sun, styling products, pollution, minerals in water) on a mission to ruin your bleachy new locks.
But you know this so you do everything right: you wear a hat on holiday, you only use purple shampoo, you treat your hair to masks and you only let a trained professional dye your hair and despite your best efforts, your hair always turn copper.
Why? You ask, well it turns out that the hero of haircare: argan oil, isn't all that heroic.
While argan oil is great for hydrating and repairing hair as well as smoothing dry ends, it has one major flaw - it's colour. Pump a few drops into your palm and you'll see what we're talking about, it's yellow.
In it's purest form, Moroccan argan oil is a deep, golden yellow in colour.
The argan oil used in beauty products is lightened slightly to a honey-dew shade but nonetheless, it's still yellow. So despite your best efforts to keep your hair brass-free, if you're using argan – you're hair is going to turn yellow.
So the next time you go to grab your trusty hair oil, read the label. If argan is listed as an ingredient, give it to your brunette friend.
Main image by @anoukyve on Instagram