4.0 hair colour is a professional hair colouring technique that combines multiple shades and tones to create a natural, multi-dimensional look. Unlike traditional hair colouring methods that use a single shade, 4.0 hair colour uses a combination of high and low lights, as well as toner, to create a more natural and flattering effect.
The benefits of 4.0 hair colour are numerous. First, it can help to add volume and depth to hair, making it look thicker and fuller. Second, it can help to correct uneven hair colour and brassiness. Third, it can help to enhance natural hair colour and add shine. Finally, 4.0 hair colour is a relatively low-maintenance technique, making it a good choice for those who don't have a lot of time to spend on their hair.
