A blonde hair trend going viral for summer? It’s hardly groundbreaking news, especially since the upcoming July release of the Barbie movie is prompting people to get a Malibu-worthy look for themselves. However, one particular blonde trend is taking off on TikTok – and it’s much less maintenance than a full head of blonde highlights.The hashtag #ScandiHairline currently has 2.5B views on the app, signalling this method of lightening strands is set to be the look of summer for many of us with blonde or light brown hair (or for those wanting a big colour transformation from dark).