Do you have any rules when it comes to choosing a shampoo and conditioner?

Definitely go sulphate free. Sulphates cut through dirt but they also strip your scalp of natural oils.

Beauty Works has one called Pearl Nourishing Sulfrate-Free Shampoo (£12.99, very.co.uk) and Ouai has one called ‘Clean’ (£19.90 plus shipping, sephora.com) which is really gentle, so works well if you’re washing extensions.

Wavy hair seems to be one of your signature looks. How do you get it so perfect?

I’m obsessed with my Ouai Wave Spray (£18.48 plus shipping, sephora.com) – it dries into a really natural wave. Kevin Murphy makes some amazing pomades too (£20, kevinmurphy.com). I use them for off-duty waves, to give them a bit a grit.

Celebrity stylist Jen Atkin on the secrets to having great hair