Sunscreen or sun products for hair.

I've worked on the beach for the past 3 summers, 9am-7pm, everyday with some kite boarding in the ocean thrown in there. I hear a lot of opinions and talk on sunscreen on here, I've tried to do my research but I made this thread to ask what are some people's final answers on the product they use, love, and believe prevents sun fading (as best as possible).

Also, what conditioners or shampoos can rejuvenate color?

Thanks
- Dan