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Small rectangular box with brown and silver graphics showing medium brown hair color shade

L'Oreal

L'Oreal Inoa 4.0/4NN Brown Natural Ammonia-Free Hair Color 60g

SKU CH-05F7-M7AF8

Ammonia-free permanent colour covers 100% of white hair with 50% extra shine, lightens up to 3 levels in 35 minutes, and leaves hair nourished and softer

  • TypeHair Color
  • For Treatment OfNormal Hair
  • ColorMulti-Color
  • GenderAdult
  • AgeAdult
  • EcologicalHomeopathic
  • Ammonia-free formula prevents scalp irritation and strong odour during colouring
  • ODS2 technology delivers 100% white hair coverage with 50% extra shine
  • Lightens up to 3 levels in 35 minutes for faster results
  • 1:1 mixing ratio simplifies preparation and application
  • Leaves hair intensely nourished, hydrated and softer after colouring

Professional ammonia-free permanent colour

L'Oreal Professionnel Inoa 4.0/4NN is a permanent hair colour formulated without ammonia for professional salon use. The 60g tube delivers medium brown reinforced shade with ODS2 technology designed for comfort during application. It is intended for colourists seeking reliable white-hair coverage on normal adult hair.

Sustained processing performance

The formula lightens up to 3 levels in 35 minutes while maintaining consistent deposit throughout the development time. Coverage reaches 100% of white hair and the treatment leaves strands feeling intensely nourished and hydrated until the next colour service. Hair texture becomes softer than before colouring with 50% extra shine reported.

Pre-purchase checklist

Verify that you hold the professional expertise required for permanent oxidative colour mixing and application. Confirm the client's hair type is normal and the desired result matches a medium brown reinforced tone at level 4.0/4NN. Ensure a 1:1 mixing ratio with the appropriate developer is available before starting the service.

Highlights

  • Ammonia-free formula prevents scalp irritation and strong odour during colouring
  • ODS2 technology delivers 100% white hair coverage with 50% extra shine
  • Lightens up to 3 levels in 35 minutes for faster results
  • 1:1 mixing ratio simplifies preparation and application
  • Leaves hair intensely nourished, hydrated and softer after colouring

Specifications

BrandDial
TypeHair Color
For Treatment OfNormal Hair
ColorMulti-Color
GenderAdult
AgeAdult
EcologicalHomeopathic

Questions about this item

Does the ammonia-free formula reduce scalp irritation during the 35-minute processing time?

The ODS2 technology is designed for uncompromised comfort without ammonia, leaving hair feeling intensely nourished and hydrated throughout the treatment.

What developer strength and mixing ratio are required to use this 60g tube?

This permanent colour must be mixed in a 1 to 1 ratio with a compatible oxidant developer, which is sold separately and chosen based on the desired lift.

Will shade 4.0/4NN match my existing medium-brown colour-treated hair without turning too dark?

The medium brown reinforced shade provides 100% white coverage and can lighten natural hair up to three levels, so previously coloured lengths may absorb pigment differently.

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