Evesel Color

Professional permanent hair color systems consist of two components that are mixed immediately before application: a cream dye (the color base containing the dye precursors and alkalizing agents) and an oxidizing developer (typically hydrogen peroxide in a cream or lotion base). The ratio is typically 1:1 or 1:1.5 (dye to developer) depending on the specific formula instructions.

EVESEL's Gold Hair Color system follows this standard two-component structure. The 120 ml tube is the color component; the 800 ml professional oxidizer bottle or the 150 ml small-format bottle provides the developer. The multi-pack format - six 120 ml dye units with one large oxidizer - is sized for salon bulk purchasing where multiple color services are performed in sequence.

The 'Gold' designation in the product name is a line quality tier rather than a literal color - it indicates the professional-grade formulation within EVESEL's range.

Permanent hair dye uses a two-stage process. First, the alkalizing agents in the cream dye (typically ammonia or its substitutes) swell the hair cuticle open, allowing the dye precursors and the developer to enter the cortex. Second, the hydrogen peroxide in the developer simultaneously oxidizes the melanin already present in the hair (lifting, or lightening, the natural color) and oxidizes the dye precursors into larger colored molecules that become trapped inside the now-expanded cortex.

The balance between lift and deposit is controlled by the developer's hydrogen peroxide concentration. Lower volumes (3%, labeled 10 vol) deposit color with minimal lift - good for darkening or covering gray on already-dark hair. Medium volumes (6%, labeled 20 vol) provide 1 to 2 levels of lift alongside deposit - the most common choice for natural-looking color changes. Higher volumes (9% and 12%, labeled 30 and 40 vol) provide more aggressive lift but require a more careful application to prevent uneven results.

The EVESEL 6% 150 g oxidizer is labeled as a decolorizer-format developer, positioned as a small-size alternative to the 800 ml professional bottle for single-use or small-scale applications.

The professional hair color numbering system uses a two-part code: a number indicating depth (how dark or light, on a scale from 1-black to 10-lightest blonde) and a letter indicating tone. The 'N' suffix stands for 'Neutral' - a tone that is neither warm (golden/copper/red) nor cool (ash/green), but straight-down the middle in color perception.

4N Brown is a medium brown - the depth level commonly described as 'chocolate brown' in consumer product descriptions. On hair that is level 4 to 5 naturally, it refreshes existing color. On hair that is lighter, it darkens. On gray hair, 4N with a 20 vol developer provides solid gray coverage with a medium-brown result.

5N Light Brown is one level lighter than 4N - a warm light brown that reads as 'chestnut' in the mid-depth range. Also provides full gray coverage. Suitable for those who want a brown result with slightly less depth than 4N, or for use as a base before adding a highlight service on top.

The 800 ml EVESEL professional oxidizer is sized for salon use where multiple color services consume developer in volume. There are two versions in the current lineup: the 2nd Oxidizer and the Professional Only 2 Oxidizer, which are different developer options within the Gold system (the specific volume percentages should be confirmed on product packaging).

The 150 g small-size oxidizer (6%, marketed as a decolorizer format) is the at-home or single-service option. At 150 g per use with a 1:1 mixing ratio to a 120 ml dye tube, it is sized for one full-head color application. For touch-ups covering roots only, one bottle can cover two to three applications on short hair.

The practical choice: if you color multiple people's hair or return to the same color regularly, the 800 ml format reduces per-use cost significantly. For single-use or occasional home coloring, the 150 g size avoids storing and managing a large open developer bottle.

The EVESEL multipack that pairs six 120 ml dye tubes with one large-capacity oxidizer is designed for high-volume use - a salon performing multiple color services with the same shade, a bulk buyer stocking a supply for regular home coloring, or a purchaser sharing across a household with similar color preferences. The per-tube cost at the multipack price is lower than buying individual 120 ml tubes.

The included oxidizer is sufficient for six full-head applications when mixed at the standard 1:1 ratio. This makes the multipack a ready-to-use system rather than requiring a separate developer purchase. The 12G Highlighter notation in the product description refers to a specific shade variant in the Gold lineup rather than a physical highlighter tool.

The EVESEL Lumia Eye Damage Hair Repair Mask (200 ml) is a post-color treatment positioned for hair that has been repeatedly colored, bleached, or heat-styled - the overlapping damage scenarios labeled 'eye damage' in the Korean product description. The 200 ml size is a full-size professional treatment rather than a travel or sample format.

Post-color hair care matters because the coloring process temporarily compromises the cuticle and cortex. The oxidizing agents in developer reduce disulfide bonds in the cortex - the structural cross-links responsible for hair's tensile strength. Repeated coloring without treatment gradually decreases elasticity and increases breakage.

A repair mask formulated for this context typically contains hydrolyzed proteins (to temporarily fill cortex voids), ceramides or lipids (to reseal the cuticle), and film-forming polymers that bind to damaged surfaces and smooth the cuticle scale. Use after coloring and at least once weekly between color services to maintain hair integrity across the coloring cycle.

Standard professional permanent color application follows this sequence regardless of brand:

1. Strand test: Mix a small amount of dye and developer at your intended ratio and apply to a hidden strand for 30 minutes. Check for color result and any unexpected reaction before full application.
2. Mix: Combine cream dye and developer in a non-metallic bowl at the ratio specified on the dye tube packaging (typically 1:1 by weight). Mix thoroughly until a uniform cream forms with no streaks of unmixed color.
3. Section and apply: Working in 1 to 2 cm sections, apply from roots outward. For root touch-ups, apply only to the regrowth area first; add mid-lengths and ends in the last 5 to 10 minutes if refreshing faded color.
4. Process time: Typically 30 to 45 minutes at room temperature, or as specified in the product instructions.
5. Rinse and treat: Rinse thoroughly until water runs clear. Apply the Lumia Repair Mask or a conditioning treatment to restore moisture and close the cuticle.

Do not apply to irritated, broken, or sensitized scalp. Perform an allergy skin test 48 hours before use if this is your first time with a new color product.

Gray hair lacks melanin pigment and a slightly different cuticle structure than pigmented hair, which means it absorbs dye differently - sometimes more readily (true white hair) and sometimes with resistance (coarser, salt-and-pepper gray). For consistent gray coverage with EVESEL 4N or 5N:

• Use 20 vol (6%) developer for standard gray coverage in most hair types
• Mix at 1:1.5 (color to developer) if coverage is patchy with 1:1 - the extra developer extends penetration time
• Process for the full 35 to 45 minutes - cutting short reduces coverage in resistant gray
• Apply to dry, unwashed hair - the natural scalp oils create a slight barrier that reduces irritation during application

Gray hair after coloring may fade faster than pigmented hair because of its altered porosity. Using a color-depositing shampoo or toner between sessions can extend the life of the color.