Create an elegant, neutral-cool medium brown hair color with subtle iridescent play. INOA's oil-enhanced technology works without ammonia and without a penetrating odor, so the coloring experience is more pleasant - while leaving hair shiny and with a soft, well-groomed feel.
Advantages
- Permanent, ammonia-free color with a comfortable application experience
- Oil-based ODS technology promotes color penetration and a cared-for feel
- Up to 100% coverage of gray hair
- Possibility of lightening natural hair up to several tones
- Even, neutral-cool medium brown tone that helps to tone down warm/reddish-orange undertones
- Luminosity and shine with a natural, sophisticated finish
The shade 4.20 – what does it mean?
- 4 = Medium brown depth
- .2 = Iridescent/violet reflex (cool shade)
- .0 = Natural base that balances the reflex
The result is a medium brown color with a cool, iridescent sheen – ideal for those who want to neutralize warm tones in brown hair and achieve a more calm, elegant look.
Who is 4.20 suitable for?
- You who want a medium brown color with cooler, iridescent undertones
- You who want to dampen unwanted heat in a brown starting point
- You who have gray hair and want uniform, natural coverage
Professional result
The formula is developed for salon use and is used in conjunction with the accompanying beize to achieve the most precise and gentle result. The color preserves the quality of the hair and provides a shiny, long-lasting finish with a natural feel to the hair.
Note: These are professional colors, which means chemistry, and therefore it is important to have the right information before you get started. Contact your hairdresser, and if you have the necessary knowledge – enjoy a colorful everyday life. BEAUTYCOS disclaims all responsibility for any unforeseen events in connection with the use of the hair colors.
🎄 Attention!
- Return policy extended until 31/1/2026
Free shipping:
- Free delivery when you spend over €149
We have the following delivery options:
- Delivery to a parcel shop
- Delivery to private address/workplace
See all shipping providers and prices here
How long is your delivery time?
We have 4-8 working days delivery time.
See all shipping providers and delivery times here
How much does delivery cost?
Delivery from: £8.99
Free delivery when you spend over £149
We have a packaging fee on all orders of £0.50
See all shipping prices and shipping suppliers here
How long is your return policy?
We always have a 14-day return policy from the day you receive the parcel.
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