Anti-Frizz and Shine Serums

Does anyone know of a good anti-frizz product that doesn't weigh hair down and gives hair a polished shine?

I see so many (Jon Frieda, etc.) in the drugstore, but am wondering which one is the best, in your opinion. I just bought a product called Frizz Miracle that contains a protein treatment with grapefruit that is used as a deep conditioner, and a leave-in shine and anti-frizz treatment. It's made by Montagnejeunesse.co.uk (that's the only information I could find) -- has anyone used this, or can reccomend any other product since my hair seems to frizz when not blow-dried.

Kris