Evesel Hair Oxidizer Pieces
Every EVESEL Gold Hair Color piece includes a large-capacity oxidizer bottle matched to the 120ml color tube. The oxidizer activates the pigment and controls the lift level, so using the correct included formula rather than a generic developer matters for predictable results. Nine shades are available, sold in sets of six complete kits each containing both color tube and oxidizer.
By Skinsli editorial Updated
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Buying guide
EVESEL Hair Color Oxidizer: What It Does and Why It Comes Included
The oxidizer (developer) is as important as the color tube in any hair dye kit. EVESEL Gold Hair Color addresses this by including a large-capacity oxidizer bottle specifically matched to its 120ml formula in every piece. This guide explains how the oxidizer works, why the included bottle matters, and how to handle it correctly for consistent results across all nine shades in the range.
What the Oxidizer Does in Hair Color
The oxidizer contains hydrogen peroxide, which activates the color chemistry in the dye tube. Without the oxidizer, the pigment precursors in the color formula remain inert. When the two are mixed, the peroxide opens the hair cuticle, allows the pigment to enter the cortex, and then oxidizes the small color molecules so they become too large to rinse out. The volume (strength) of the peroxide determines how much natural pigment is lifted at the same time.
Why Using the Included Oxidizer Matters
The oxidizer bottle included with each EVESEL piece is calibrated to the specific shade and lifting requirements of that formula. Using a generic or different-strength developer alters the ratio and can affect both lift (how light the hair goes) and tone accuracy (the final color cast). For predictable results that match the shade description, always use the included oxidizer rather than a separately purchased developer.
Oxidizer Volume and Hair Coverage
The large-capacity format ensures there is enough developer to activate the full 120ml color tube without diluting the mix. A mismatched small developer bottle forces either an incomplete fill or an off-ratio mix. For shoulder-length or longer hair, the full-volume approach means consistent saturation from root to tip rather than running short mid-application.
Opening and Mixing the Oxidizer Bottle
Remove the cap from the oxidizer nozzle tip. Squeeze the entire color tube into the oxidizer bottle. Replace the nozzle cap and shake firmly for 20 seconds to ensure even mixing. The bottle is designed to accept the full tube with headroom for shaking. Do not add extra product or water to extend the volume; this alters the peroxide concentration and reduces lift.
The Activation Window After Mixing
Once the color and oxidizer are combined, the reaction begins immediately. The mixed formula should be applied within 5 minutes of mixing and the full application completed within 30 minutes of the start. Do not prepare the formula and then wait. The peroxide begins degrading after mixing, so delay reduces lift effectiveness. Any leftover formula must be discarded after the session.
How Oxidizer Strength Relates to Shade Selection
Higher-lift shades (9N, 10G, 12G) require a stronger peroxide oxidizer than darker shades (5N, 5V). EVESEL calibrates the included oxidizer to the specific shade: the bottle included with 12G Highlighter is labeled as high-capacity and uses a higher developer strength than the bottles included with 5N or 6G. Always use the oxidizer that came with the specific shade tube you are applying.
Storing Unused Oxidizer Bottles
Unopened oxidizer bottles should be stored upright at room temperature between 5°C and 30°C. Keep away from heat sources, direct sunlight, and sharp objects. The bottles are sealed under light pressure; do not compress or pierce the container. Once the seal is broken by opening the nozzle, the peroxide inside begins losing potency and the bottle should be used or discarded within the same session.
Safety Notes for Handling the Oxidizer
The oxidizer contains hydrogen peroxide, which is an oxidizing chemical. Avoid contact with eyes; if contact occurs, flush with water for 15 minutes. Do not inhale the fumes in an enclosed space. Work in a ventilated area. Wear gloves during application. Keep out of reach of children. If skin irritation develops, rinse immediately and do not continue the application.
FAQ
Frequently asked questions
FAQ
Frequently asked questions
What is a hair color oxidizer?
A hair color oxidizer is a hydrogen peroxide developer that activates the pigment in the dye tube. Without it, the color formula stays inert. When mixed with the color, the oxidizer opens the hair cuticle, allows pigment to penetrate, and triggers the chemical reaction that makes the color molecules bond permanently to the cortex.
Is the oxidizer already included in each piece?
Yes. Each piece in the EVESEL Gold Hair Color six-piece set includes both a 120ml color tube and a large-capacity oxidizer bottle. No separate developer purchase is needed.
Can I substitute a different developer instead of the included oxidizer?
It is not recommended. The included oxidizer is calibrated to the specific shade and volume of the color tube. A different developer may have a different peroxide strength or volume, which can alter the lift level, shift the tone, or produce uneven color. For consistent results, use the oxidizer that comes with each piece.
What is the difference between the high-capacity and large-capacity oxidizer bottles?
Higher-lift shades like 12G Highlighter and 9N include a high-capacity oxidizer with a stronger peroxide concentration needed for greater lift. Shades like 5N, 6G, and the V series include large-capacity oxidizers calibrated for moderate lift. The label on each piece specifies which type is included. Always use the oxidizer from the same piece as the color tube.
When should I mix the color and oxidizer?
Mix immediately before applying. The peroxide reaction begins the moment color and developer are combined. Prepare the mix within 5 minutes of starting your application and complete the full application within 30 minutes of mixing. Delaying after mixing reduces developer potency and can result in less lift than expected.
What should I do if the oxidizer contacts my skin or eyes?
For skin contact, rinse the area with water immediately. For eye contact, flush with clean water for at least 15 minutes and seek medical attention if irritation persists. Do not continue the application if you experience burning or stinging on the scalp; rinse immediately. Wear gloves during mixing and application to avoid prolonged skin contact.
Can I save an opened but unused oxidizer bottle?
No. Once the oxidizer nozzle seal is broken, the hydrogen peroxide inside begins losing potency through exposure to air. An opened bottle should be used in the same session. Unopened pieces can be stored at room temperature until the expiry date on the packaging.
Why is the oxidizer bottle pressurized?
The bottle contains hydrogen peroxide, which off-gases slightly over time and creates minor internal pressure when sealed. This is normal. Do not puncture or compress the bottle, and store it upright. If you notice significant swelling or deformation, discard the bottle and do not use it.
Do all six pieces in a set come with separate oxidizer bottles?
Yes. Each of the six pieces is a complete, self-contained kit. Every piece includes one 120ml color tube and one oxidizer bottle. You do not share a single developer across all six pieces; each application uses its own dedicated oxidizer.
Does the oxidizer damage hair?
All oxidative hair color involves some structural change to the hair during processing. The EVESEL formula is designed to minimize damage through its standard volume oxidizer, which provides enough lift for the intended shade without excessive processing. Following the recommended timing (25-30 minutes, not to exceed 40 minutes) limits exposure. Post-color conditioning helps restore moisture to the cuticle.
Are EVESEL products on skinsli.com genuine?
Yes. Skinsli.com sources all EVESEL products from verified Korean wholesale channels. Items arrive manufacturer-sealed, and the oxidizer bottles and color tubes are original packaging. Contact support if you receive a product with broken or tampered packaging.
How often should I reapply EVESEL hair color?
Most people reapply every 4-8 weeks, depending on how quickly roots appear and how fast the shade fades. Neutral and golden tones tend to hold longer than violet tones. For gray coverage, root reapplication is usually needed around the 5-6 week mark as new growth becomes visible at the part line.