I just recently started refrigerating my KCCC, KCKT, and Giovanni products. I don't see any reason why it would ruin them. As far as I know, the natural products don't have any ingredients with bactericidal/fungicidal properties, so the refrigeration would help slow down the growth of the icky stuff.
3b curls
Products I'm using:
Shampoo 1-2x/week: Organix Coconut
Co-wash: Suave Naturals Coconut
Conditioner: GVP Conditioning Balm
Leave-in: Giovanni Direct Leave-In
Gel: LA Looks Sport

How to HENNA your hair: http://annieshealthtalk.hubpages.com...-Dye-Your-Hair
"Sh*t Curly Girls Say": http://www.youtube.com/watch?v=emqRg3t3mng