I'm 46. I've been dyeing it for years but the grey was coming through more ovbiously and more quickly. So I lightened my brown hair to a dark blonde, which has made the grey regrowth less obvious.
I was overdue for putting another londe box on it - not to bleach it lighter, but to tint the grey a more gold colour - and then the lockdown happened and I'm very interested to see what it will look like when it has grown out fully.
A few years ago I taught year 4 and one of my class, while standing next to me and I was sat down, looked down and said 'Mrs Maxwell, your hair is all twinkly'
I'm happy to get more and more twinkly and see what it looks like when it's natural. The blonde has gone a bit ginger now and I don't like it. I'm tempted to do a colour remover, but I've used it in the past and ended up VERY ginger with white roots.