I didn't really find much a difference between the extra strength and the regular version.

This is pretty generic in terms of a silicon hair serum, it worked great at sleeking out your hair taming flyaways and smoothing ends. My hair is slightly wavy so it helps define my waves a bit too. A great product if you want a cheaper alternative the got2b glossy anti-frizz shine serum does the same thing. The pump bottle of the John Frieda is nice though.

Beware, use only a little, too much and this will make your hair look greasy and limp.

One of the best serum I've used. I use it everyday when I get out of the shower. Saw a differance in about one week on my biracial hair.