Kate Middleton's shiny hair is down to this tool that costs less than $17

Kate Middleton's hairbrush is set to go viral as we reveal how it's responsible for the volume, shine and health of the Duchess' hair

Kate Middleton Hair
(Image credit: Clive Brunskill / Staff/Getty Images)

Kate Middleton's hairbrush should surely get an Instagram account of its own as we can't be the only ones obsessed with her shiny hair. 

Perfectly coiffed, it never puts a foot (or cuticle, should we say) wrong, whether Duchess Catherine opts for a classic up-do or relaxed beachy waves.

But let's face it, glamorous hair treatments do come with a price, whether you're a Duchess or not. For example, taking strands a lighter shade ups the risk of damage and dullness to an otherwise glossy head of hair—which might have been a concern for her after she added a few highlights.

But somehow Kate has graciously side-stepped that issue.

So what is the Duchess of Cambridge's secret?

Interestingly, it's not something that will break the bank. It's a $17 (£12.95) detangling brush. 

Tangle Angel 2.0 Gloss Pink, $17 (£12.95 (opens in new tab)) | Feel Unique

Designed for detangling, wet/dry hair and suitable for all hair types.

Kate's hairdresser Richard Ward (opens in new tab)has waxed lyrical about his Tangle Angel (opens in new tab) since 2016 when he first started explaining its role in ensuring Kate Middleton's blow-dries looked healthy and full of bounce.

Of course, the combination of a glossy serum and smoothing the hair's cuticles with one of the best hair dryers will always encourage hair to reflect light. But according to trichologist Anabel Kingsley (opens in new tab), the way we brush our hair is also a big factor in whether it stays shiny and healthy or simply snaps off.

According to Kingsley, boar bristle brushes are a too heavy handed "as they can remove sections of your hair's outer cuticle (its protective layer)." Metal prongs are another no-no as they overheat when you blow-dry, potentially burning both your scalp and hair. 

The key to the Tangle Angel's success are the bristles, explains Ward. "They are soft, they flex and return. They don't pull the hair, they separate and guide the strands smoothly. They are also heat resistant for blow-drying."

All of which elevates the Tangle Angel to hairbrush royalty. 

Fiona Embleton is a beauty writer who is now Acting Beauty Editor at Stylist. She is obsessed with Isabel Marant and cats.