This might sound like the most counterintuitive beauty fad yet but according to those in the know, dunking your face in a cold bowl of water could be the secret to perfectly matte skin.

Like most beauty trends – think sheet masks, BB creams and cushion foundations – Jamsu started in Korea and is the hot tip in K-beauty right now.

High-tech beauty gadgets Show all 6 1 /6 High-tech beauty gadgets High-tech beauty gadgets Tria Hair Removal System £235 lookfantastic.com High-tech beauty gadgets Clarisonic Mia Fit £153 johnlewis.com High-tech beauty gadgets Dyson Supersonic Hairdryer £299.99 johnlewis.com High-tech beauty gadgets Philips OneBlade Pro Styler and Shaver £64.95 johnlewis.com High-tech beauty gadgets Foreo Luna 2 for Men £169 lookfantastic.com High-tech beauty gadgets GHD Platinum Copper Luxe £175 johnlewis.com

Roughly translated to ‘diving’ or ‘submerging’, the technique was invented by a Japanese beauty blogger and involves nothing more than a bottle of baby powder and a basin of water.

So what does it involve?

Start by carrying out your routine as usual - cleanse, moisturise and apply your primer, foundation and concealer. Next, shake a heavy amount of baby powder onto your palms and pat it on to your face.

After filling a sink with cold water, plunge your powdered façade into the bowl and hold it there for around thirty seconds. Finally, pat your face dry and finish the rest of you look.

You should be left with an intensely matte complexion that’s super-smooth and even-toned.