Eyebrows can be tinted to match your hair color, or darkened to see them better.
I personally have blonde eyebrows and tint them every 4 or 5 weeks.
Does it take long? No. It only takes about 15 mins. due to we are depositing color and the longer you keep it on, the darker it usually looks. I like it because it even stains the skin under the hair and gives a darker look. Eventually after a day or so the skin lightens up, but does give great color below the hair. The hair on the eyebrow will retain color for several weeks.
I would recommend to wax after coloring your eyebrows due to the fact all the small hairs will then show up and you want to give a good clean look and shape to the brows. Add eyebrow tinting to your monthly services, it is well worth the time and money. Eyebrow tinting is a great way to give a pick me up to your look.