Most permanent salon colours mix with developer at 1:1 or 1:1.5, demi-permanents at 1:2, and high-lift shades at 1:2. Always measure to the brand's stated ratio and developer strength, mix fresh in a non-metallic bowl, and apply immediately for predictable, even results.
Hair colour mixing ratios and times
The table below summarises the typical mixing ratio (colour : developer), the developer to pair it with, and an approximate development time for the main professional ranges. Always confirm against the shade tube and pack, as high-lift, super-lightener and intense shades can differ.
| Range | Ratio (colour:developer) | Developer | Approx. time |
|---|---|---|---|
| L'Oreal Majirel | 1:1.5 | Creme Oxydant 12.5–30 vol | 35 min |
| L'Oreal INOA | 1:1 | INOA Oxydant | 35 min |
| Wella Koleston Perfect ME+ | 1:1 | Welloxon Perfect | 30–40 min |
| Koleston Special Blonde | 1:2 | Welloxon Perfect | ~45 min |
| Schwarzkopf Igora Royal | 1:1 | Igora Royal Oil Developer | 30–45 min |
| Igora Royal Highlifts | 1:2 | Igora Oil Developer 12% | ~45–50 min |
| L'Oreal Dia Light | 1:1.5 | Dia Activateur | ~20 min |
| Wella Color Touch (demi) | 1:2 | Color Touch Emulsion 1.9% / 4% | 15–20 min |
| Wella Illumina | 1:1 | Welloxon Perfect | 30–40 min |
Permanent colour (1:1 to 1:1.5)
Permanent cremes such as Majirel, Koleston Perfect ME+ and Igora Royal are mixed with a cream or oil developer. Match the developer volume to the lift and grey coverage you need — see developer volumes explained.
High-lift shades (1:2)
High-lift blondes such as Koleston Special Blonde and Igora Royal Highlifts use more developer (1:2) and the highest volume to maximise lift on natural hair.
Demi-permanent and toning (1:2)
Demi-permanents like Color Touch and Dia Light deposit tone without lifting, so they use low-strength emulsions at 1:2. To understand when to use each colour type, read toner vs demi vs permanent vs high-lift.
Why the ratio matters
Too much developer over-dilutes pigment and weakens deposit and grey coverage; too little gives a thick, hard-to-apply mix with uneven results and reduced lift. Measuring accurately — by weight on scales or by a marked bowl — keeps every batch consistent.
Measuring and mixing tips
- Mix in a clean, non-metallic bowl — metal can react with peroxide.
- Weigh on scales for repeatable formulas, especially for colour bars and teams.
- Mix to a smooth, lump-free cream and use immediately — oxidation starts as soon as it is mixed.
- Make only what you need; mixed colour cannot be stored.
Frequently asked questions
Can I mix different colour brands together?
It is not recommended. Chemistry, ratios and developer systems differ between brands, so results become unpredictable. Stay within one range.
Can I mix two shades from the same range?
Yes — intermixing shades within a range is normal for custom tones. Combine the shades first, then add developer to the total weight.
How long can mixed colour sit before use?
Use it straight away. Once developer is added the mixture begins to oxidise and loses performance.
What developer volume should I use?
That depends on lift and grey coverage — see developer volumes explained and grey coverage.
Ratios and times are a general guide; always follow the manufacturer's instructions for each shade. For professional use.
