Hair Dyes

Changing Your Hair Colour Without Changing Your Bank Balance

There's something deeply satisfying about a fresh hair colour. Whether it's covering greys that appeared overnight like uninvited guests, going a shade darker for autumn, experimenting with highlights, or doing something completely bold because life is short and hair grows back — colour changes your look more dramatically than almost anything else. And while salon colour is gorgeous, it's also expensive. Properly expensive. A full head of highlights can cost more than a weekend away.

Home hair dye has improved enormously. The formulations are gentler, the shade ranges are wider, the results are more predictable, and the application tools have gone from "messy nightmare" to "actually manageable." You're not going to replicate a salon balayage in your bathroom (please don't try), but a great all-over colour, root touch-up, or tonal refresh? Absolutely achievable at home for a fraction of the price.

Types of Hair Dye

Permanent dye is the full commitment. It opens the hair cuticle, deposits colour inside, and stays until it grows out or you colour over it. It covers greys completely and can lighten or darken by several shades. The trade-off: it's the most damaging type because it chemically alters the hair structure. But modern permanent dyes include conditioning agents that minimise damage significantly compared to formulas from even ten years ago.

Semi-permanent dye coats the outside of the hair shaft without opening the cuticle. It washes out gradually over six to twelve washes, depending on the formula and your hair's porosity. It can't lighten hair — only deposit colour at the same level or darker. It's far less damaging and excellent for experimenting with tones, refreshing existing colour, or adding richness without commitment.

Demi-permanent sits between the two — lasts longer than semi (up to 24 washes) and provides better grey coverage, but still fades gradually. It's the sweet spot for people who want noticeable colour change without the root regrowth line of permanent dye.

Temporary colour — sprays, mousses, colour-depositing conditioners — washes out in one or two shampoos. Zero commitment, zero damage, maximum fun for festivals, weekends, or trying a shade before committing.

Choosing Your Shade

The box colour and the result on your hair will differ. Always. The starting point matters enormously — the same "medium brown" will look completely different on blonde hair versus dark brown hair versus grey hair. Read the shade guide on the back of the box, not just the front model photo. Most brands show expected results on different starting shades. Trust the guide, not the model.

Go one shade lighter than you think you want. Home colour tends to develop darker than expected, especially on porous or previously coloured hair. You can always go darker next time. Going lighter to correct an overly dark result is much harder and significantly more damaging.

Strand tests exist for a reason and take twenty minutes. Apply the dye to a small hidden section, process for the recommended time, rinse and dry. This shows you the actual result on your actual hair before committing your entire head. It saves potential disasters every single time.

Application Tips That Actually Help

Section your hair properly — four sections minimum, held with clips. Work product through each section methodically rather than slopping it all on and hoping for the best. Even coverage comes from even, systematic application.

Apply to roots first for new growth touch-ups since roots process faster from scalp body heat. Then pull colour through the lengths for the last five to ten minutes only — this freshens existing colour without over-processing already-dyed ends.

Time the processing accurately. Set a timer. Over-processing damages hair and pushes colour darker or ashier. Under-processing gives patchy, weak results. The time on the box isn't a suggestion — it's calibrated to the formula's chemistry.

Aftercare Matters

Colour-treated hair needs specific care for vibrancy and condition. Use colour-protecting shampoo and conditioner formulated with lower pH and gentle surfactants. Weekly hair masks restore moisture that the colouring process removes. Serums add shine and protect against environmental fading from UV and pollution.

Avoid washing hair for at least forty-eight hours after colouring — this gives the cuticle time to close fully and lock colour in. When you do wash, use lukewarm water rather than hot. Hot water opens the cuticle and allows colour molecules to escape, which is why freshly dyed hair fades fastest in the first few washes. Cold rinses at the end seal things up nicely and add extra shine that makes the colour look even better.

Sun exposure fades colour too, particularly reds and coppers which are the most vulnerable to UV degradation. If you're spending time outdoors, a UV-protection hair spray or wearing a hat protects your colour investment. It seems like a small thing, but it genuinely extends the life of your colour by weeks.

Compare dye prices across our retailers — the same box varies by two to four pounds between shops. Check our deals page for multi-buy offers on hair colour. Your perfect shade doesn't need to cost salon prices to look salon-worthy.