#3 - Dark Brown: Definition with a natural touch. Belmacil No.3 Brown is a very dark brown colour with a solid matt coverage. The brown tones do give a more natural feel to the end result for those clients who wish to achieve this colour tone. Clients with dyed dark brown hair can use Belmacil No. 3 dark brown for the eyebrows to match the hair colour. TIP: Mix Belmacil No.3 with Belmacil No.3.1 Light brown to achieve lighter colours for the eyebrow area or to suit individual clients lashes.