Lately, you may have noticed a space-age, professional-looking facial gadget popping up on your Instagram feed. Dermalux, the LED brand responsible for professional machines in salons and dermatologists’ offices, also offers an at-home mask – the Dermalux Flex MD, aka the most powerful at-home LED device with medical-grade, FDA-approved technology normally only available in-clinic. And, naturally, this serious piece of facial technology hasn’t gone unnoticed by eagle-eyed skincare obsessives and celebrities .

Read more: The 15 Best LED Face Masks To Supercharge Your Skincare Routine

Facialist Katharine Mackenzie Paterson, founder of KMP Skin, uses LED in her treatments and takes the Dermalux Flex MD with her when she makes home visits to clients. “It uses the three lights – red, blue and near infrared – which have had the most studies done on them for topical use on skin. There are very few contraindications, it’s non-invasive, and it feels relaxing. I also like that you can use it on younger people who might be suffering with acne.”

It has seven different treatment modes depending on your concerns, such as ageing, redness, pigmentation and psoriasis. The low levels of LED light penetrate the skin and accelerate cell regeneration – which means speedier skin repair and an increase in collagen productionkin, plumping skin and generally healthier looking. It can also help with muscle and joint pain, speed up wound recovery by stimulating the skin’s natural healing process, and increase Vitamin D levels, which is important at this time of year.

Among the tool’s devoted fans? Kate Moss. During Milan Fashion Week in September, photographer Mert Alas posted an image on Instagram of the super in her hotel room underneath the Dermalux Flex MD dome. Meanwhile, Minnie Driver waxed lyrical about her machine, introduced to her by facialist Nicola Russell, claiming that she thinks the machine is “bananas good”.

So, what should you know before you make the investment? “Firstly, of course, do check that you’re okay to use it, and that you don’t have any contraindications,” advises Paterson. “Then I generally say, for best results, you must use it consistently. I think the sweet spot is three to four times per week, morning or evening. Ideally you want to be using the device on bare skin (with as little product on as possible), so after cleansing and before applying serum/cream/SPF is ideal.”

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