Garnier Color 1 count (Pack of 1), 5.0 Luminous Brown Permanent Hair Dye

The first number of a Hair Colour is how Light or Dark the Brown hair dye will be, for example brown shades range from 4, Deep Brown to 6, Light Brown. The second number is the reflect which can be Natural (.0), Warm (.3. 4. 5. 6) or Cool (.1. 2).