The result looks very natural, and my hair feels healthy and well-groomed after coloring. I especially love that my gray streaks appear as natural highlights, which gives a subtle and lively touch. The color is permanent when applied correctly, so I recommend trying a lighter shade first, just to be sure you’re happy with the tone. I have to touch up my roots every three weeks, but that’s because I use a pretty dark shade and have quite a bit of gray hair. A couple of tips: If your temples are very gray, they might look a bit greenish right after coloring – but don’t panic! The color evens out and looks completely natural the next day. Also, this might sound a bit strange, but I wash my hair with Dr. Greve intimate wash before applying the color. The low pH and silicone-free formula make the color adhere extra well and last longer.