I use American Crew Forming Cream which is basically a slightly less shine version of the fiber if I recall (fibers blue lid, forming creams green)
I go for the same style and recommend either, my hairs naturally pretty straight if that helps too
A month ago I started to feel hair loss and in dave 2 weeks it went worse with thining of hairs as well. I used different products but there was no result. Some one suggested me to use Renu Derma natural hair care products and it magically worked. Now my hair are strong and shiny.
I suggest you to try these products once and see the difference yourself.