How long does semi-permanent hair dye last?

Changing your hair colour can make you feel like a whole new person, and there’s no better way to switch things up than with a semi-permanent dye. They give you that freedom to be bold and experiment without any long term commitment. But if you’ve never used this type of product, there’s probably one question on your mind: just how permanent is a semi-permanent dye?

Why choosing quality makes a huge difference

So, how long does semi-permanent hair colour last? It really all comes down to its formula. With some brands, you can expect them to last anywhere from 6 – 8 washes, but with products like L’Oréal Paris Casting Crème Gloss, you can enjoy your new colour for up to 28 shampoos. Casting Crème Gloss doesn’t just last longer – it also gives you a richer tone that blends grey hairs with your natural highlights.

Which is right for me: permanent or semi-permanent dye?

Permanent hair dye allows for up to 100% grey coverage and a complete change in your look, using a permanent hair dye is also a long-term commitment. If you are looking to enhance your natural hair, Semi-permanent hair dye is the solution for you. The dyes in a semi-permanent formula are less damaging on hair follicles because the colour essentially sits on the surface. This is why they wash out quicker than permanent dyes. Casting Crème Gloss allows you to create an ultra-glossy shine, without straying too far from your natural look. 

If you’re not sure whether to take the plunge with your chosen hue, here’s what you should consider:


Why choose a semi-permanent hair dye

Newbie friendly & simple

If you’re new to hair dying, the process of using a non-permanent colour is much less intimidating, and they’re often easier to apply. L’Oréal Paris Casting Crème Gloss just takes three steps: mix, apply, massage. Then after 20 minutes, you’re ready to rinse.

No commitment, no risk

Obviously, the big benefit of semi-permanent is that any mistakes you make will literally come out in the wash. You won’t ever find yourself frantically Googling, “how long does semi-permanent hair dye last?” because just 28 washes later, you can get back to your OG colours!

No ammonia 

Casting Crème Gloss is the UK’s no.1 for ammonia, resulting in a pleasant smell, which you may not finds with other permanent solutions. 

Why choose a permanent hair dye

Creature of habit

When you’ve found a shade that suits you, some of us are perfectly happy sticking with what we know and don’t feel the need to change our hair with the seasons. If you already know what you want, there are no problems with going permanent.

Covering grey hairs

Though plenty of semi-permanent dyes will help to blend away grey hair, some of us just want to know that they’re covered and not have to deal with them until the roots need touching up. Permanent products will do just that and mean less time having to maintain your hair. Permanent products are often more effective at covering greys, offering up 100% coverage. 

Fewer applications

How long does hair dye last when it’s permanent? Realistically, it’s there until you grow your hair out, so it’s a big commitment. On the plus side, this does mean fewer applications over time to maintain your colour, which is convenient when you’re pressed for time.

Does washing your hair affect how long the dye lasts?

You should avoid washing your hair daily if you want to get the most out of a temporary hair colour, and a little dry shampoo is all you need to freshen up between showers. We also recommend investing in good quality shampoos and conditioners designed to protect coloured hair to avoid stripping it out too quickly. To max out your time with your fiery red locks or gorgeous chestnut tresses, here are some extra tips to remember:

  • Use cooler water when rinsing your hair
  • Avoid bright sunlight and chlorine, which can damage pigmentation
  • Don’t use harsh heat when styling

With a bit of extra care, you can make your L’Oréal Paris Casting Crème Gloss colour last even longer. If you’re ready to shake up your style, get started with L’Oréal.