One of the stylists at Von Anthony Salon in Frisco shared this story about Kerastase hair products. (I read it on their blog.) I've used Kerastase on my own hair and it works great.
The styling aid Kerastase Resistance Substance Constructive - It's for dry, weakened, color treated hair. When I was in cosmetology school I sizzled my bangs due to bleach and flat ironing. I had never even heard of Kerastase at the time and my girlfriend brought me this life saving product. I used it religiously for about a week and with a slight trim my bang was completely back to normal. :)