For the last 12 months or so, I have had my eyebrows threaded once every 6-8 weeks. In the week afterwards, I always have little white spots in the area between my brows. They go eventually, but is this standard? I make sure I don’t wear make up last time when I went, as I thought maybe this was causing it. But it doesn’t seem to be making any difference and I still have the white spots a week on.