L'Oreal Inoa #4.0 Deep Brown Permanent Hair Color 60g

Inoa #4.0 Deep Brown Ammonia-Free Permanent Colour

L'Oréal Professionnel Inoa #4.0 is an ammonia-free permanent hair colour delivered in a 60 g tube. It uses ODS2 oil-based technology to drive pigment into the hair fibre while keeping the scalp comfortable and eliminating the typical ammonia odour. The shade is formulated for adult users with normal hair who want a deep brown result with full grey coverage.

Sustained performance through 35-minute development

During the 35 minute processing time the oil delivery system maintains even colour deposit from roots to ends without the harsh fumes that can irritate sensitive scalps. The formula lightens natural pigment by up to 3 levels while simultaneously conditioning the hair, so the fibre feels soft rather than brittle once rinsed. Colour radiance remains consistent until the next salon visit because the oils help seal the cuticle and lock in pigment.

Replaces traditional ammonia-based permanent colour

This product replaces conventional ammonia permanent dyes for colourists and clients who prioritise scalp comfort and an odour-free experience. The jump is worth it when 100 % white-hair coverage is required without the stinging sensation or strong smell that often accompanies alkaline ammonia systems. It is not suited for anyone needing fashion shades outside the natural-level range or for users who prefer a purely plant-based or henna-based alternative.