I have always had really nice hair (long, thick, blonde) and I have always had lots of compliments about it.
Now though, since DC, it is just looking worse and worse and I don't know what to do! I have used L'oreal casting in a blonde shade for years and years, but I haven't done it for ages and my hair is not the cleanest in the pic which admittedly doesn't help, as it does look darker when it's dirty. But I have so much grey now and the worst thing is the greys are so wiry and stick up all over the place and it just looks really bushy and awful 
Can anyone who knows about hair tell me what I can do with it to make it look better? I've never had bad regrowth with the colour that I've been using, so have been wary of doing anything that will give me really obvious roots, and also I don't want the expense/hassle of running to the hairdresser for a touch up every 6 weeks.
Is it time to admit defeat and get highlights or something at the hairdresser? Or is there anything else that would make it look better?