So I doubt I’m the only one who reads the back of product bottles while I'm in the shower. (What else are you to do when you're waiting for that conditioner to sink in?) We've all read the shampoo directions: lather, rinse, and repeat. But is it really necessary to shampoo a second time, or is one time usually enough? Wanting to find answers to my burning questions about whether repeating is necessary or whether it's just another ploy created by the beauty industry to get me to use twice as much shampoo (and money) unnecessarily, I decided to search for some answers. (Read: I Googled.)
The short answer? Nope, not totally necessary. Turns out that unless your hair has exceptional buildup or if you use a lot of products in your hair, the repeat isn't really needed, and that shampooing can actually be damaging to hair, stripping it of its natural oils. If you do find your hair to have a lot of buildup, you might be better of using a clarifying shampoo rather than your regular shampoo. You'll know if you need to repeat if your hair still feels like it has product in it, even after you've rinsed. Clean hair should feel smooth and squeaky after shampooing, not grimy or gummy.
I also noticed, in a survey of all the million bottles of shampoo that stake their claim in my shower, that it's only the drugstore brands that insist on the repeat. Interesting.