I've actually stayed away (FAR) away from Pantene for YEARS when I heard about, an experienced, the wax and build up. Recently though, I've been looking for a product that I could spray on dry hair to revive my second (or whatever day) curls, so I looked at a few Pantene products. I'm not an ingredient expert, but I didn't see any that were awful or would build up, so I gave this a try. The first time I was pleased. It seemed to control frizz by a minuscule amount, but didn't do anything for my curls itself, although it added shine. I continued using it every now & then, but I noticed that my hair wasn't getting moisturized and was actually falling out a little. I think from now on I'll use it as an occasional shine spray, but that's just to finish the bottle up.
For reference, I have thick, prone to dryness, frizzy, curly (3b, with a hint of 3c) hair.