So what am I doing, strolling down New Bond Street with a bouffant? Rewind seven hours and I’m sitting in Wood’s gleaming Holland Park atelier as multicoloured hair extensions, real and ethically sourced, are held up to my head. I thought I had brown hair. Just brown. Turns out it’s six different colours — ranging from bright blonde to dark chestnut — and to create my mega hair, many strands of each will be layered and carefully glued onto my scalp. ‘The bigger the hair the more colour-matched extensions you’ll need,’ explains Wood. ‘A few streaks in such a big style would get lost.’ I’m washed, then glossed with Wood’s Cool Me Down Shade Shot, a serum-like product from his new Josh Wood Colour System range, which is worked through damp hair and mixed with his Everything Mask. ‘A gloss helps to take down any unwanted undertones — the Eighties style is all about glossy, premium colour.’