First, let’s quickly cover how permanent hair colours work. They’re usually formulated with ammonia, which helps to open up the hair cuticle, so the pigment can penetrate deep within the hair shaft. It’s this process that makes permanent hues so intense and helps them last longer than any other colour. It’s also how certain permanent colours, such as Koleston Perfect and Illumina Color, are able to give your client up to 100% grey coverage.
But demi-permanent hair colours work quite differently. They tend to be ammonia-free, yet they feature an alkali ingredient that gently opens just the outer layer of the hair, so colour molecules can rush in. Because this colouring process isn’t as intensive, demi-permanent colours don’t last as long as permanent shades. However, they are also gentler to hair, and offer softer regrowth in between colour appointments.
On average, your client’s demi-permanent shade will last around 24 washes, but it may stay true even longer if they’re working bold shades or starting with a lighter base. A demi-permanent colour is the perfect pick for anyone who wants to transform their shade, banish brassy tones, enhance highlights and balayage, or even create a soft root smudge. Put simply, it’s ultra-versatile.
Is Demi-Permanent Hair Colour Damaging?
Some demi-permanent hair colours offer low damage, and some, like Shinefinity, give your client zero damage. It all depends on the colour product you’re working with. As the No.1 salon colour brand in the world*, our products at Wella Professionals harness the latest technology to ensure all formulas are kind to the hair. So your client doesn’t have to compromise to enjoy rich, radiant results they can make their own.
Try These Demi-Permanent Hair Colours: