Review Of Color Levels For Hair References. Black (darkest) black is the first hair color level, and it technically is unbleached hair. Web they range from the lightest blonde (level 10) to the darkest black (level 1), with several shades of brown in between.
This system of levels is used by hair color manufacturers to communicate the darkness or lightness of a shade. Here we are taking the l’oreal paris’ hair color level. These are called hair levels or numbers and this is.
