Haircare: Do blondes really have more fun?

Hi guys...so over the last few months I've been really sick of my blonde hair for many reasons.  My roots always show quick that I've been having to get my hair highlighted at the hairdressers every payday which is quite pricey. Also I've been noticing the lightening has been taking a toll on the condition of my hair even though I also specifically use blonde hair care products, I noticed dry split ends and seen my hair becoming thinner and thinner the last few years.  Plus as a busy working mam and having to have my hair tied up for work (which after a few weeks the roots just show) I started to think what was the point paying all that money every 4-6 weeks!  I decided I would go back brunette (even though every time I change back I can never get used to it) to give my hair a break and to try and improve the overall condition and see if this will help it grow too! The hair dye I used was Loreal's Casting Crème Gloss in light brown.  I chose light brown because whenever I've dyed it brown in the past sometimes in can go really dark and almost look black which I DEFINATELY don't suit. SO here's me with brown hair...

I'm still finding it strange every time I see myself in a mirror it still looks weird because I'm so used to blonde.  But I was really impressed with the colour it turned out and this hair dye was so easy to use.  I know I will have to do it a few more times as the brown will start fading and the blonde will start to show through but that's expected. 

Please let me know of any good hair care products...specific to brown hair to keep the colour longer or just any normal ones for severely dry, in need of moisture ones!  And also...do you know of any makeup shades look better with brown hair?

Let me know!