Demi Dye Assalt Line
DEMI Dye Assalt is a professional Japanese hair color line built for natural, dimensional brunette results. The 10+ shades currently in stock cover the full Assalt Arias Deep Natural range: depth levels D-4 through D-9 in WB (Warm Beige), CB (Cool Beige), and BB (Bright Beige) variants. The line is structured around a precise two-axis code system that separates depth from tone, giving colorists independent control over how dark and how warm or cool the result reads. The Assalt line is produced in Japan with DEMI's low-ammonia conditioning technology and is a common choice in professional salons working with Asian hair textures.
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Buying guide
DEMI Dye Assalt Line: Complete Professional Reference for Shade Selection and Application
DEMI Assalt is the professional oxidative color line designed for natural brunette results, gray coverage, and tonal refinement. The current in-stock selection draws from the Assalt Arias Deep Natural range - 10+ shades across D-4 to D-9 depth levels with WB, CB, and BB tone variants. This reference guide covers the complete shade coding system, developer usage, and application protocols for professional colorists.
What the Assalt Line Covers
The DEMI Assalt line is the professional oxidative color system within DEMI's product range. The Arias sub-line within Assalt is the core natural color collection, and the Deep Natural segment within Arias covers the dark-to-light brunette depth range (D-4 through D-9). The line does not include high-lift, direct dye, or lightening products - it is designed entirely for deposit-and-cover results in the natural brown family.
The Two-Axis Code System
Every Assalt shade carries a depth code (D-4 through D-9) and a tone code (WB, CB, BB). Depth sets how dark the result is; tone sets its warmth or coolness. These two dimensions are independent, which means D-5 WB and D-5 CB will produce the same darkness but different warmth direction. This structure allows colorists to make precise adjustments across visits - for example, staying at D-7 but switching from WB to CB if the client finds the initial warm result too golden.
Depth Reference: D-4 Through D-9
D-4 is dark brown; D-5 is medium dark brown; D-7 is medium brown; D-8 is light medium brown; D-9 is light brown. The jump from D-5 to D-7 (skipping D-6) is a gap in the current in-stock matrix - colorists can bridge this by mixing D-5 and D-7 in a 50:50 ratio to approximate a D-6 result. D-4 is the best choice for very dark natural hair and for the densest gray coverage requirements.
Tone Code Reference: WB, CB, BB
WB is Warm Beige - golden, honey-toned. CB is Cool Beige - ash or neutral-cool, counteracts brassiness. BB is Bright Beige - clean and luminous with no strong temperature direction. WB suits warm and olive skin tones; CB suits cool, pink, or neutral undertones and clients with previous warm color they want to cancel; BB is the versatile default that works across skin tone categories and is the lowest-risk starting point for new clients.
Developer Pairing for Assalt Line Shades
Pair with DEMI's own developer line for calibrated results. 3% (10 vol) is the standard for deposit and gray coverage without lift. 6% (20 vol) adds approximately one level of lift to the deposit, useful when the client's existing hair is slightly darker than the target depth. Higher concentrations are not recommended within the Deep Natural line because they introduce unpredictable lift that disrupts the CB and WB tone axes. Mix at 1:1.5 (color to developer) for full deposit; 1:2 can be used for improved spreadability on thick or dense hair.
Processing Time and Heat Use
Room-temperature processing time is 30 minutes. With gentle salon heat, reduce to 20 minutes. Do not exceed 40 minutes total. Process longer only for resistant gray on very coarse hair, and use heat rather than time extension where possible - heat improves penetration without the tone shift risk that comes from extended room-temperature oxidation. Rinse thoroughly when processing is complete; residual product left on the scalp past the processing window can cause scalp sensitivity.
Custom Mixing Within the Assalt Deep Range
DEMI Assalt shades can be mixed together to produce intermediate results. Depth mixing: equal parts D-5 and D-7 approximates D-6; 70:30 D-7 to D-5 gives a depth close to D-6.5. Tone mixing: equal parts WB and CB at the same depth approximates a BB-equivalent result with the specific pigment profile of those two shades rather than the standard BB formula. Record all custom mixes by weight and always recheck the ratio at the client's next visit using the original record rather than estimating from memory.
First Service Protocol for New Clients
For clients new to DEMI Assalt, conduct a patch test 48 hours before the appointment. On the service day, assess the client's natural or current processed depth and gray percentage. Recommend a depth match or one level darker than the target for the first service, as a shade that is exactly on target is easier to adjust than one that came out too dark. Use BB at the first service unless the client has a strong tone preference, then adjust to WB or CB on the second visit based on the outcome.
Recommended First Stock Order
For a salon stocking DEMI Assalt for the first time, D-5 WB, D-5 CB, D-5 BB, D-7 WB, D-7 CB, and D-7 BB cover the core high-volume brunette range. Add D-4 WB for the darkest tier and D-8 WB and D-9 WB for lighter natural clients. This nine-shade opening order handles the vast majority of Deep Natural color services without committing to the full shade matrix before you know the demand profile of your client base.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
What products are included in the DEMI Dye Assalt line at skinsli.com?
The current in-stock Assalt selection covers the Arias Deep Natural range: 10+ shades at depth levels D-4 (dark brown) through D-9 (light brown) in WB (Warm Beige), CB (Cool Beige), and BB (Bright Beige) tone variants. D-5 and D-7 are the most fully stocked, each available in all three tone variants. D-4, D-8, and D-9 are available in WB and select CB options.
How does the two-axis DEMI Assalt shade code system work?
Every shade has a depth code (D-4 to D-9) and a tone suffix (WB, CB, or BB). The D number controls darkness - D-4 is dark brown, D-9 is light brown. The suffix controls whether the result reads warm, cool, or neutral - WB is golden warm, CB is ash cool, BB is neutral bright. Choosing a shade means making both decisions independently: depth first, then tone direction.
Is DEMI Assalt particularly suited for Asian hair textures?
Yes. DEMI's Assalt line was developed in Japan and calibrated for the structural characteristics of Asian hair - typically high density, coarse to medium texture, and naturally dark depth. The formula's gray coverage at darker depths (D-4 to D-7) is particularly reliable on this hair type, and the low-ammonia base reduces the risk of texture disruption that can occur with European professional lines on dense Asian hair structures.
D-6 is not listed - what do I use for a client between D-5 and D-7?
Mix D-5 and D-7 in a 50:50 ratio to approximate a D-6 result. You can adjust the ratio toward D-5 (60:40) for a slightly deeper outcome or toward D-7 (40:60) for a slightly lighter one. Record the exact ratio and weights used so the result can be reproduced at the next service visit.
Will DEMI Assalt D-7 CB remove brassiness from previously colored hair?
D-7 CB will deposit cool, ash-leaning pigment that partially counteracts brassiness in previously colored or sun-faded hair. It will not lift or remove existing warm pigment - it neutralizes it by depositing cool color on top. On very brassy or copper-toned hair, CB alone may not fully neutralize in one application; a pre-treatment or multiple services may be needed to fully shift the tone. For the CB effect to read clearly, the underlying hair should not be more than two levels warmer than the target depth.
Can I mix DEMI Assalt shades from different depths to create a custom color?
Yes, mixing different D-level shades is a common professional technique. The result depth will approximate the weighted average of the two depths in the mix. Keep the tone suffix consistent (both WB, or both CB) when mixing depths for a predictable tone result. Mixing different tone suffixes at the same depth is also possible but the tone outcome requires testing on a strand to verify the exact result before application.
How many root-touch-up services can I typically get from one DEMI Assalt tube?
A standard DEMI Assalt tube (80g) covers a full-head root touch-up for shoulder-length to medium-density hair in approximately two to three services, depending on the application zone size. For very thick or long hair requiring high product volume, plan on one tube per service. For precise planning, weigh the formula used in each service and adjust ordering frequency based on actual consumption data from your salon records.
Is BB (Bright Beige) in DEMI Assalt similar to what other brands call 'Natural'?
BB functions similarly to what many European professional color brands label 'Natural' or 'N' - a neutral shade with no strong warm or cool direction. The Bright Beige designation in DEMI's system adds a slightly luminous quality to the neutral result, which reads as extra shine and vibrancy rather than a flat neutral. It is the closest equivalent to a natural/neutral tone in other systems and is a reliable cross-reference for colorists transitioning from other professional lines.
How can I confirm the DEMI Assalt color I order from skinsli.com is genuine?
Skinsli sources DEMI products through authorized wholesale channels and all products arrive in original DEMI packaging with intact seals and batch codes. The packaging, tube printing, and shade card colors match the Japanese domestic market product presentation. If you receive a product with inconsistent packaging, a broken seal, or unusual appearance, contact skinsli support with a photo and the batch code printed on the tube for investigation and replacement.
What is the shelf life of DEMI Assalt color tubes, and how should they be stored in a professional setting?
Unopened tubes stored at stable room temperature (away from direct light, humidity, and heat sources) have a shelf life of 24 to 36 months from the manufacture date printed on the tube. Once opened, reseal tightly and use within four to six weeks for consistent results. Mark the opening date on each tube. In a busy salon, organizing stock rotation by manufacture date prevents using older stock after newer tubes have been opened.
How long does delivery take for DEMI Assalt hair color ordered from skinsli.com?
Delivery timelines depend on your location and the shipping option selected at checkout. skinsli ships from its US-based inventory for domestic orders. For current estimated delivery windows, shipping costs, and tracking information, refer to the shipping policy page on skinsli.com or contact support directly. International orders may be subject to customs processing time in addition to carrier transit time.