RUBELLA FASHION JUUKSEVÄRV TUME KASTAN 4.0 115ML
Rubella fashion hair color dark chestnut 4.0 115ml
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Rubella fashion hair color dark chestnut 4.0 115ml

€3.50

Rubella Fashion Color Permanent Cream Hair Dye 4.0 Dark Brown (115ml): permanent oxidative hair dye with rice protein + fixing balm with vitamins and keratin. Vibrant, lasting dark chestnut colour.

Availability:
1 in stock
SKU
3104430
Ean
3800038933151
Rubella fashion hair color dark chestnut 4.0 115ml is available to buy in increments of 1

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Rubella Fashion Color Permanent Cream Hair Dye in shade 4.0 Dark Brown (Dark Chestnut) is a permanent oxidative cream hair colouring product from the Rubella (Fara) range, providing a rich, deep dark brown colour with a warm chestnut undertone. The permanent hair colouring process works through an oxidative chemistry mechanism: the alkaline dye cream is mixed with a hydrogen peroxide developer immediately before application; in the alkaline pH environment, dye precursor molecules penetrate the hair cortex and are oxidatively coupled to form stable, large chromophore molecules that are permanently fixed within the cortex. The formula contains rice protein, which has a film-forming and conditioning effect on the hair cuticle, sealing the cortex, increasing colour retention and providing shine. The included post-colour fixing balm is enriched with vitamins and keratin to provide conditioning, smoothing and strengthening of the hair shaft after the colouring process, countering the structural protein changes induced by the alkaline and oxidative chemistry of the dyeing process. Shade 4.0: a neutral-based dark brown / dark chestnut — a rich, classic dark shade for dramatic colour transformation or full coverage of grey hair. 115 ml cream tube + developer + fixing balm.

WARNING: This product can cause severe allergic reactions (anaphylaxis, severe skin reactions). Read and follow instructions carefully. This product is not intended for use on persons under 16 years of age. Do not use to dye eyelashes or eyebrows — this may cause blindness. Temporary "black henna" tattoos may increase your risk of allergy. Do not use if you have a rash on your face or sensitive, irritated or damaged scalp. Consult a doctor if you experience any reaction after use.

115 ml + developer. Permanent oxidative cream hair dye.

NET QUANTITY: 115 ml cream + developer (see kit contents).

SHADE: 4.0 Dark Brown (Dark Chestnut).

INGREDIENTS (INCI): See product label for full INCI list (contains oxidative hair dye precursors, peroxide developer, rice protein, keratin fixing balm).

USE: Read the enclosed instruction leaflet in full before use. Perform an allergy test 48 hours before each use. Mix cream with developer as directed; apply to hair; leave for the specified time; rinse thoroughly.

WARNINGS (EU-MANDATORY): Can cause severe allergic reactions. Read and follow instructions. Not for use on persons under 16. Do not use to dye eyelashes or eyebrows. Temporary "black henna" tattoos may increase your risk of allergy. Always perform a patch test 48 hours before use. Not a medicinal product. Keep out of reach of children.

STORAGE: Store at room temperature, away from direct sunlight.

BEST BEFORE: See packaging.

COUNTRY OF ORIGIN: Russia/Europe.

MANUFACTURER: Rubella (Fara), Russia.

IMPORTER: VITATEKA OÜ, Mõisa tee 5, Kostivere alevik, Harjumaa, Estonia 74204, vitateka.ee

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Customer Questions
How will shade 4.0 Dark Chestnut look on my current hair colour and grey coverage?
Shade 4.0 is a dark brown with a warm chestnut undertone. On natural hair that is already dark brown to black, the change will be subtle — mainly a refresh with added warmth and shine. On medium to light brown hair, expect a noticeable deepening and a richer, more even tone. If you have a significant amount of grey (over 30–40%), the chestnut nuance will appear brighter on those strands, creating a natural-looking highlight effect rather than a flat, uniform block of colour. Previously coloured hair, especially if it has been lightened or toned, may absorb the pigment more intensely, so the result can come out slightly darker than on virgin roots. Because this is an oxidative permanent dye, the colour develops inside the hair shaft and will not wash out; regrowth will be visible after 4–6 weeks. For the most predictable outcome, do a strand test on a hidden section using the exact mixing ratio and development time you plan to follow.
What is the correct mixing ratio, development time, and after-care routine for this dye?
As an oxidative cream colour, this product must be mixed with a hydrogen peroxide developer (usually 6% / 20 vol for standard coverage, 9% / 30 vol for resistant grey or a lift of up to one level). The standard mixing ratio is 1 part colour cream to 1 part developer by volume — for the 115 ml tube, that means 115 ml of developer. Mix in a non-metallic bowl until smooth. Apply immediately to dry, unwashed hair, starting at the roots if you have regrowth, then pulling through the lengths for the last 10 minutes. Maximum development time is 40 minutes; do not exceed it. Rinse thoroughly with lukewarm water until the water runs clear, then shampoo gently. The included fixing balm with keratin and vitamins is designed for the post-colour step: apply it to towel-dried hair, leave for 3–5 minutes, then rinse. The rice protein in the colour cream helps smooth the cuticle during the process, while the balm reinforces that effect, reducing roughness and improving shine. Avoid heat styling for 24 hours after colouring to let the cuticle fully close.
Why is the 48-hour patch test mandatory and how do I perform it correctly?
Oxidative hair dyes contain precursors (such as paraphenylenediamine) that can sensitise the immune system over time. A reaction may not appear on the first, second, or tenth use, but can suddenly occur as a severe contact dermatitis — redness, swelling, itching, blistering — not only on the scalp but also on the face, neck, and eyelids. To test, mix a tiny amount of colour cream and developer in the same 1:1 ratio. Using a cotton bud, apply a 1 cm spot behind the ear or on the inner forearm. Leave uncovered for 48 hours; do not wash, cover, or apply other products on that spot. If any redness, burning, itching, swelling, or blistering appears — even mildly — do not use the product on your head. Wash the test area immediately and consult a pharmacist or doctor. Repeat this test before every single colouring session, even if you have used this exact shade before, because sensitivity can develop at any time. Also skip the test if the scalp is already irritated, sunburned, or has open cuts.
What do the rice protein and keratin balm actually do for my hair during and after colouring?
During the oxidative process, the alkaline environment opens the hair cuticle so colour precursors can enter the cortex. This temporary swelling can leave the cuticle edges raised, making hair feel rough or porous after rinsing. The rice protein in the colour cream forms a light, breathable film on the hair surface while the dye develops. This film helps keep the cuticle scales lying flatter during processing, which reduces mechanical friction and improves light reflection — so the hair feels sleeker immediately after the first rinse. After shampooing, the fixing balm delivers hydrolysed keratin, a protein with a similar amino-acid profile to natural hair keratin. It temporarily fills microscopic gaps in the cuticle layer, restoring elasticity and reducing flyaway strands. The added vitamins (typically panthenol and vitamin E derivatives in such balms) support moisture retention and antioxidant protection. For best results, leave the balm on for the full 3–5 minutes before rinsing with cool water; this helps seal the cuticle and lock in the new pigment, extending colour vibrancy between washes.
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Delivery - terms and prices

After placing an order, delivery is processed on business days. Package design and product images may differ. Delivery time depends on the selected method - on average up to 5 days.

Estonia
  • Pick-up at Vitateka store (T1, Peterburi tee 2)Free
  • Parcel locker Itella Smartpost2.28 €
  • Parcel locker Omniva3.05 €
  • Parcel locker DPD2.34 €
Free to a parcel locker for orders from 30 €
Packeta (selected countries)
  • Poland - home delivery (courier)5.00 € / 21 PLN
  • Slovakia - pick-up point (PUDO)3.80 €
  • Slovakia - courier5.87 €
  • Czech Republic - pick-up point (PUDO)3.93 €
  • Czech Republic - courier6.10 €
  • Hungary - pick-up point (PUDO)4.13 €
  • Romania - pick-up point (PUDO)3.61 €
Latvia
  • Parcel locker Itella Smartpost3.96 €
  • Parcel locker Omniva4.90 €
  • Parcel locker DPD4.13 €
Free to a parcel locker for orders from 35 €
Lithuania
  • Parcel locker Itella Smartpost3.96 €
  • Parcel locker Omniva4.95 €
  • Parcel locker DPD5.11 €
Free for orders from 40 €
Finland
  • Posti pick-up point6.90 €
Free for orders from 75 €
Other EU countries

International Omniva post - from 7 € (price depends on parcel weight). For other options (DPD, FedEx), standard rates and transit times apply.

Free delivery - on request

In addition to the thresholds listed above, we can consider free delivery options depending on the order amount and for deliveries to other countries. Contact us and we will suggest the best option.

Delivery time

On average - up to 5 business days (depends on the selected delivery method).

Loyalty program - 5% cashback on purchases

Registered customers receive 5% cashback on purchases. Bonus points are credited automatically and can be used to pay for future orders.

Cashback and points rate
  • Cashback for registered customers5%
  • Earning rate1 EUR = 5 points
  • Point value1 point = 1 cent
Example: purchase of 100 EUR = +500 points ( 5 EUR )
Key conditions
  • Credit appliedafter invoice creation
  • Max payment with pointsup to 50% of the order
  • Validity period183 days
  • Reminder7 days before expiration
How the program works
  • For every 1 euro spent5 bonus points
  • 1 bonus point equals1 cent
  • Cashback rate5% of the purchase amount
  • Bonuses are availableonly to registered and logged-in users
Bonuses are available only to registered and logged-in users
Using bonus points
  • You can pay with pointsup to 50% of the order value
  • Points can be used to pay forproducts, taxes, and shipping
  • Minimum balance for use1 point
  • If an order is returnedspent points are refunded
Bonuses are credited even when using coupons or when part of the order is paid with points
Validity period and notifications
  • Bonus points are valid183 days from the date of credit
  • Email reminder7 days before expiration
  • When are bonuses credited?after invoice creation
  • Are bonuses credited when using coupons?Yes
  • Are bonuses credited if part of the order is paid with points?Yes
How to start earning cashback

1) Register on the website - create an account to participate in the program.

Step 2

Log into your account - bonuses are credited only to logged-in users.

Step 3

Make purchases - cashback is credited automatically after invoice creation.

What it is

Rubella Beauty "RUBELLA" Fashion Juuksevärv Tume Kastan 4.0 115ml is a permanent cream hair dye designed for long-lasting dark brown colour with a warm chestnut nuance. People usually choose this type of colouring when they want a deeper, richer shade that stays in the hair rather than washing out quickly, or when they want even grey coverage and a more polished overall look.

How it works

This is an oxidative hair colour, which means the colour develops inside the hair shaft during application. When the colour cream is mixed with the developer, the alkaline environment helps colour precursors enter the hair cortex. There they react with oxygen and link together into larger colour molecules that become fixed within the hair. In simple terms, the shade is built from within the fibre, which is why permanent hair dye gives a more lasting result than temporary or semi-permanent colour.

Conditioning components

What makes this formula more interesting is the combination of colouring agents with conditioning elements:

  • Rice protein is included for its film-forming effect: it helps smooth the cuticle surface, so hair can feel sleeker and reflect light better after colouring.
  • Fixing balm with vitamins and keratin is meant for the after-colour step. Keratin is a structural protein naturally associated with hair, so in cosmetic use it helps the hair surface feel smoother and look less rough after the oxidative colouring process, while the balm also improves softness and shine.

When people choose it

This shade, 4.0 Dark Brown, suits those who want a classic dark chestnut result without an overly red or fashion-bright effect. It can fit:

  • A colour refresh
  • A full change from a lighter brown
  • A home colouring session before an event or as part of ongoing hair maintenance

As with any permanent dye, the final result can vary depending on your starting colour, previous colouring history and the amount of grey hair.

Important notes

Please keep the safety side in mind: permanent hair colour can trigger serious allergic reactions in some people.

  • Always perform the patch test 48 hours before each use.
  • Avoid use on irritated or damaged scalp.
  • This product is not suitable for eyelashes or eyebrows.
  • Extra caution is important if you have reacted to hair dye before or have had a black henna tattoo.

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