Demi Assalt Hair
<p>The DEMI Assalt Aria line is a professional Japanese hair colour system, and this collection brings together the shades we stock under it. You will find the Aria C range, the Aria S camelbage tones, and the Deep Natural D-series running from D-4 through D-9 in both warm-brown and cool-brown bases. These are salon-grade dyes built for predictable tone and grey coverage, so the shade codes matter: the letter and number tell you the depth and the undertone you are mixing toward.</p><p>Browse the full set of 14 shades below and match by code rather than by the swatch alone, since base level changes how each tone develops on different hair.</p>
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Buying guide
DEMI Assalt Aria hair colour: reading the shades
DEMI Assalt Aria is a professional dye system where the shade code carries most of the information you need. This guide walks through the sub-lines we carry, how to read the depth numbers and base letters, and what to expect when you mix and apply them.
What the Assalt Aria line is
Assalt Aria is DEMI's professional permanent colour range, made in Japan for salon use. The products in this collection are oxidative hair dyes, meaning they develop with a separate peroxide cream rather than coating the surface. That gives longer wear and reliable grey coverage compared with semi-permanent options. Within Aria we stock three groupings: the Aria C shades, the Aria S camelbage tones, and the larger Deep Natural D-series.
The Deep Natural D-series
Most of this collection sits in the Deep Natural line, with codes from D-4 up to D-9. The number is the depth: lower numbers like D-4 are darker, higher numbers like D-9 are lighter. Deep Natural tones are built to read as soft, true browns rather than flat black, which is why they suit grey blending and natural-looking regrowth.
Base letters: WB, BB and CB
After the number you will see a base code such as WB, BB or CB. WB is a warm brown base, BB a more neutral brown-black leaning base, and CB a cool brown base. Two shades at the same depth, for example D-7 / WB and D-7 / CB, will land at the same lightness but pull in different directions. Pick the base by the undertone you want to neutralise or emphasise.
Aria C and Aria S Camelbage
Alongside Deep Natural you will find Aria C shades such as the C Hair Dye 8 WB, and the Aria S Camelbage range like the Camelbage 12/11CaB. Camelbage tones lean toward beige-brown, which is useful when you want warmth taken out of lightened hair without going ashy and dull. These sub-lines mix on the same system, so you can plan a base and a glaze from the same family.
Mixing with developer
Like other professional permanent colours, Assalt Aria is mixed with an oxidising cream before it goes on. The developer strength controls how much lift you get: a lower volume holds the deposit close to the natural level for grey coverage, while a higher volume lifts before depositing. Always follow the ratio printed for the line and do a strand test, since the same code can develop slightly differently across hair textures.
Choosing by code, not by swatch
Because base level changes the result, the safest way to shop this collection is by code. Decide your target depth first, then choose the base letter for the undertone. If you are covering grey, lean toward the warmer or neutral bases at a mid depth such as D-7, which tend to read most natural across a head with mixed regrowth.
Who this collection is for
This range is aimed at colourists and confident home users who already understand mixing ratios and developer choice. If you are new to permanent colour, start with a single mid-depth Deep Natural shade and a strand test rather than committing a full application. The shade breadth here, 14 codes across three sub-lines, is what makes it worth treating as a system rather than a single product.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
What is the DEMI Assalt Aria line?
It is DEMI's professional permanent hair colour system, made in Japan for salon use. This collection gathers the Assalt Aria shades we stock, including the Aria C range, the Aria S Camelbage tones, and the Deep Natural D-series.
How do I read codes like D-7 / WB?
The number is the depth, where lower is darker and higher is lighter, so D-4 is deeper than D-9. The letters after the slash are the base undertone: WB is warm brown, BB is a neutral brown-black base, and CB is cool brown.
What is the difference between WB and CB at the same depth?
They land at the same lightness but pull in opposite directions. D-7 / WB develops warmer, while D-7 / CB stays cooler. Choose the base by whether you want to add warmth or neutralise it.
Are these dyes good for grey coverage?
Yes. As oxidative permanent colours, the Deep Natural shades are built for grey blending and reliable coverage. Mid depths such as D-7 in a warm or neutral base tend to read most natural across regrowth with mixed grey.
What does the Camelbage shade look like?
Camelbage is a beige-brown tone, useful for taking harsh warmth out of lightened hair without going flat or ashy. We carry it in codes like the Aria S Camelbage 12/11CaB.
Do I need a separate developer?
Yes. Like other professional permanent colours, Assalt Aria is mixed with an oxidising developer cream before application. The developer strength controls how much the colour lifts before it deposits, so follow the ratio for the line and run a strand test first.
How many shades are in this collection?
We currently stock 14+ Assalt shades across the Aria C, Aria S Camelbage, and Deep Natural D-series sub-lines, so it is best treated as a shade system you mix from rather than a single product.