I don’t want highlights and I don’t want to change my hair colour (sort of light-mid brunette) for now.
I have very few greys but they are certainly getting more numerous and helpfully are mostly in very visible areas 
I’ve seen ‘grey blending’ service offered and I wondered if anyone had tried it, at Headmasters or anywhere else?? It SOUNDS like exactly what I want, just gently taking the edge off the contrast with the darker hair, without a colour change.
Is it actually this, or more radical? Or just no use and not worth it? It’s not an expensive treatment fyi