A new kind of hair alchemy has emerged this winter: colour melting. A subtle fusion of balayage and highlights, the technique doesn’t just brighten hair or add dimension, it makes it vibrate. The depth! The body! The movement! That’s colour melting for you.

“Whether you’re blonde, brunette or somewhere in between, colour melting is all about creating a bespoke blend that works with your natural base, enhances your tone and grows out beautifully,” explains Hershesons colourist Hannah G. “Seamless transitions, considered tones and beautifully placed depth, creating a rich, multidimensional colour that melts effortlessly from one shade to the next. No harsh lines. No obvious contrasts. Just soft dimension, elevated richness and that perfectly lived in finish,” she concludes.

Here’s everything you need to know about this blending technique before booking your next hair appointment.

What is colour melting?

Colour melting is a hair colouring technique that takes the art of gradation to its apogee. Where balayage and highlights play on light and contrast, colour melting is about making the shades slide into one another with no visible demarcation. The painterly technique sees a colourist apply a range of shades that build on your natural colour with a brush, creating a fluid blend of shades across the hair.

“Colour melting is a seamless, sun-dripped technique that we do a lot of,” explains Jenna Perry, the celebrity colourist behind the current mocha brunette craze, who works with clients including Bella Hadid, Jennifer Lawrence and Kaia Gerber. “It has a soft and impossibly natural finish that gives effortless and expensive results.”

“Colour melting is all about creating a seamless transition between shades – no lines, no boundaries,” adds Tracey Cunningham, Schwarzkopf Professional’s US creative director of colour and technique. (She’s also behind another trending shade, molten brunette.) “It’s when your root colour, mid-tone, and ends flow together so effortlessly that you can’t tell where one starts and the next begins.”

What makes the colour melting technique different to balayage or highlights?

While highlights and balayage capitalise on contrast and light, colour melting plays with the hair’s natural depth, giving it sophisticated dimension. “Balayage is more about placement and light,” says Cunningham. “It’s a hand-painted technique designed to mimic how the sun naturally brightens the hair. You get those soft ribbons of light that feel organic and lived-in.” Traditional highlights, she adds, “give you more contrast and brightness starting at the root. They’re placed with foils, which gives a stronger lift and a more defined, dimensional effect.”

Whereas with colour melting, “You should see depth at the root, a soft shift through the mid-lengths, and a delicate glow toward the ends. Nothing should feel abrupt or overly done.” says Cunningham. “It’s a whisper of dimension – think luxurious, glossy, effortless movement. When the hair catches the light, every tone melts into the next like a gradient. It’s polished but incredibly natural.”

Who is colour melting for?

Colour melting is the perfect option for anyone looking for a way to subtly spice up their natural colour. Blondes can be amped up with apricot and honeyed hues, while brunettes can take on velvet dimension with gingerbreads and burnt caramels. Redheads can get in on the fun, too, with cinnamon and copper highlights.

“Colour melting is for anyone who loves beautiful, effortless colour with a little more depth and dimension. It’s perfect for those wanting to soften grown out highlights, blend contrasting tones, add richness to their brunette or create a more seamless transition from root to ends,” says Hannah G.

Cunningham adds that she recommends colour melting to anyone who can’t hack the maintenance of high-contrast colour but still wants that shine, depth and dimension. “The grow out is way easier to maintain,” she explains. “It’s an effect that can be achieved on any hair colour – a more subtle colour change that creates a dimensional effect via toning.” Colour melting also enhances hair texture.

Still umming and ahhing? Hannah G insists that the trend will be everywhere in 2027, and adds that while brunettes are currently in the colour melting spotlight, blondes will be in full focus for spring and summer. “Forget flat, one dimensional blonde,” she says. Next year, think of “colours like whipped vanilla, soft champagne, buttery beige and delicate pearl tones, seamlessly melted together to create a blonde that feels entirely bespoke”.

Browse some celebrity colour melting inspiration below, from Daisy Edgar-Jones to Sienna Miller.