We're all about an awesome multi-use product. A highlighter/cheek tint/lip stain? Sign us up! But, something about a 2-in-1 shampoo and conditioner has always seemed a little bit fishy — aren't shampoo and conditioner, on a molecular level, fundamentally different?
The Huffington Post called in a slew of cosmetics chemists to weigh in and, lo and behold, we were pretty much on target. In fact, conditioners are naturally cationic, or positive, while shampoos are anionic, meaning negative. It's a tricky balance for scientists to achieve, and unfortunately, the conditioning abilities of the resulting mixture are often pretty subpar. For this reason, one expert cautions against going the 2-in-1 route on a regular basis. Looks like a little extra effort may go a long way in the health and appearance of your hair. (The Huffington Post)
![linkout](http://static1.refinery29.com/bin/entry/326/x/1110891/linkout.jpg)
Like this post? There's more. Get tons of beauty tips, tutorials, and news on the Refinery29 Beauty Facebook page. Like us on Facebook — we'll see you there!