I live in a sunny, tropical climate, and the sun really faded the color out of my last unit. Do any of you have experience with using a sort of "sunscreen" to protect the hair from UVA/UVB damage in order to keep its color and prolong its lifespan?

Doing a quick Google search actually came up with some products for that exact purpose, but would they be any good for our purposes? Have any of you used any products like this?

http://paulmitchell.com/Products/PaulMit...Spray.aspx

http://www.redken.com/products/haircare/...een-spf-12