I haven't used the cc cream, but from what I understand that is more of a leave-in treatment. The blow of cream is a styling cream I use specifically before blow-drying and a little goes a very long way. I am not a very big fan of most leave in treatments as they tend to feel to heavy or greasy so I am not sure I will try the cc product, but the blow out cream is light and doesn't weigh down my hair or leave a residue at all.
Blowout creme is just that - for blowdrying. CC cream does a lot of different things - "provides moisture, shine, smoothness, softness, anti-breakage, heat protection, light hold, UV protection, manageability, and strength." It's a multi-tasking cream.