While in the midst of my Pantene Pro-V Beautiful Lengths trial, I cut my hair. I'm an asshole, I know.
I have fine, thin, color-treated hair. When my hair was longer, Beautiful Lengths worked well. It helped coat the damaged areas, and I could concentrate the conditioner on the ends. Now that I have a bob, the silicone in it makes it flat and greasy-looking after a while.
In conclusion, if you have long, lovely locks, go for it. Stuff works great. Just use a clarifying shampoo once a week to remove any silicone build-up.
If you are short and sassy like me, pick another formula.