Find your hairs youthful color
I had a bit of trouble at first. Round 1- 10 minutes on - no change Round 2 - 15 minutes and it covered a majority of my Grey. In all fairness though I have hair that's never been colored, doesn't get product in it, and hasn't seen a hairdryer since 1990. Figured it was just being resistant to change. 🤣 polar worked wonderfully once my hair accepted defeat.