Typically it starts with 1 or 2 and you just style it differently then 3,4,5 and before you know there is too many to hide. You may go for an overall color to cover it 100% as the regrowth won’t be that much. With 10-20% white hair the Maintainence isn’t going to be that high, however underneath your now coloured hair it’s continually becoming more white whilst you can’t see it, it is still happening.
Everyone’s tipping point is different and everyone’s version of high maintanence hair varies. If you have to get a color every 3-4 weeks then it is fairly high maintenance or if you have to plan your week around touch-ups then it maybe time to reassess your hair color!
The older we get the lighter your hair needs to be to look natural, you may have been born with dark ( almost black hair ) but now at 45 it’s not going to look natural with every single strand of hair exactly the same color.
How to look more natural?
Create variation in your hair color, can be simply leave the ends out and take them slightly lighter or it could be a subtle balayagè to create variation. Another way is to not take the base color so dark and also take the ends slightly lighter. The best way to have make a plan is to sit with your hairstylist and discuss it in depth prior to doing it.
Don’t do what you have always done just because you have always done it.