Grey-hair detection and treatment system

A system for coloring hair, the system comprising:

• at least one cartridge containing a hair color;
• an applicator configured to apply the hair color;
• a hair color device configured to receive the at least one cartridge;
• a plurality of bristles configured to separate hair into sections for imaging wherein one or more bristles of the plurality of bristles are hollow and disposed over the applicator, so that when the applicator applies hair color, it is applied through the one or more bristles;
• a plurality of contact pins located on the one or more bristles of the plurality of bristles;
• an infrared (IR) camera;
• and
• a processor communicatively coupled to the hair color device, wherein the processor is configured to:
• visualize an image of a user's hair with the IR camera;
• set a probability threshold for an undesired hair color;
• assign a probability to each pixel of the image as being:
• a desired hair, an undesired hair, or scalp, wherein the desired hair is a desired color and wherein the undesired hair is an undesired color;
• determine the proximity of a respective bristle of the plurality of bristles from the scalp based on a measurement from the plurality of contact pins;
• and
• apply the hair color onto the one or more pixels that exceed the probability threshold of the undesired hair color through the applicator on the hair color device through the respective bristle when the respective bristle of the plurality of bristles meets or exceeds a proximity threshold.