Demi Hair Dye Dyeing
<p>This is the broad view of DEMI hair colour, pulling together the full spread of dyeing options we carry from the Japanese hair-care house. You will find the salon <strong>Assalt Aria</strong> and <strong>Assalt Arias</strong> ranges, the grey-coverage <strong>Deep Natural</strong> shades, the <strong>Futurist</strong> dye-plus-oxidizer kit, and the at-home Satch Cover sachets, all in one place.</p><p>Because the line spans several sub-ranges, the shade language varies. Some shades use DEMI's letter-and-number system such as 12/11CaB or D-5, while others carry undertone suffixes like BB, WB and CB. Use the guide below to make sense of the codes before you pick a box.</p>
By Skinsli editorial Updated
Buying guide
The full DEMI hair dye range explained
DEMI splits its hair colour across several sub-ranges, each with its own shade language and intended user. This guide maps out what lives in this collection, from the salon Assalt lines to the at-home sachets and the dye-plus-oxidizer kit, so you can navigate the codes and pick with confidence.
The Assalt Aria salon lines
The Assalt Aria and Assalt Arias ranges are DEMI's salon-oriented colours. They offer the widest shade selection, including specific tones such as Camelbage and the Deep Natural sub-line. Codes like 12/11CaB describe level and reflect tone in DEMI's professional shorthand, which is why these are usually mixed by or with a stylist.
The Deep Natural grey-coverage shades
Within Assalt Arias sits the Deep Natural Line, built specifically to cover resistant grey with rich, believable pigment. These shades run from D-4 to D-9 and carry undertone suffixes. If full, even grey coverage is your priority rather than a fashion finish, this is the part of the range to focus on.
The Futurist dye-and-oxidizer kit
The Futurist item bundles an 80ml dye with a 100ml oxidizer, giving you the developer in the same purchase. This format suits anyone who wants the full mixing pair ready to go rather than sourcing a separate oxidizer. Follow the included mixing ratio closely, since the developer strength drives both lift and coverage.
The Satch Cover at-home sachets
The Satch Cover sachets are the convenience end of the range, made for quick at-home application and root touch-ups. They portion the colour into single-use packets, which makes them practical for refreshing the parting and temples between fuller colour sessions without opening a whole kit.
Decoding the shade codes
Two systems appear across this collection. The D-number system runs from darker low numbers to lighter high numbers, while the professional codes such as 12/11CaB pair a level number with reflect digits. Undertone suffixes round it out: BB reads neutral to brown-black, WB warmer, and CB cooler or ash. Reading the level and the undertone together is the key to a predictable result.
Choosing the right format for you
If you colour at a salon or want maximum shade choice, the Assalt lines fit. If you need dependable grey coverage at home, the Deep Natural shades or the Futurist kit are sensible. For fast root upkeep between colours, the Satch Cover sachets do the job. Matching the format to how and where you colour saves both money and effort.
Patch testing and preparation
Whichever DEMI product you choose, patch test first. Apply a little of the mixed colour behind the ear or on the inner arm and wait the full time the packaging states, even if you have coloured before. Start on dry, unwashed hair unless the instructions say otherwise, and wear gloves throughout to keep dye off the skin.
Keeping your colour looking its best
To hold the colour, switch to a gentle, sulphate-light shampoo and rinse with cooler water, which helps the pigment stay put. Grey regrowth shows first at the parting, so a sachet touch-up there extends the time between full applications. Seal any leftover product and keep it away from heat for the next round.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
What DEMI hair dye ranges are in this collection?
This collection spans the full DEMI dye spread: the salon Assalt Aria and Assalt Arias lines including the Camelbage and Deep Natural shades, the Futurist dye-plus-oxidizer kit, and the at-home Satch Cover sachets. It is the broad view rather than a single sub-range.
What comes in the DEMI Futurist hair dye kit?
The Futurist item pairs an 80ml dye with a 100ml oxidizer, so the developer is included in the same purchase. You mix the two before applying, following the stated ratio closely since the oxidizer strength controls both lift and coverage.
Which DEMI products are for salon use and which for home?
The Assalt Aria and Assalt Arias lines are salon-oriented, with professional shade codes meant for mixing by or with a stylist. The Satch Cover sachets are made for at-home touch-ups, and the Futurist kit suits home users who want the dye and oxidizer together.
How do I read codes like 12/11CaB on DEMI shades?
The professional codes pair a level number with reflect digits and an undertone suffix. The leading number is the depth level, the following digits describe the reflect tone, and letters such as BB, WB or CB signal a neutral, warmer or cooler undertone. Reading level and undertone together gives you the predicted result.
Do I need to patch test every DEMI dye?
Yes. Apply a small amount of the mixed colour behind the ear or on the inner arm and wait the full time the packaging states before each new use, even if you have coloured with DEMI before. Skin can react to colourants at any point, so testing each time is the cautious approach.