For a while, I went back to using regular shampoo -- the kind you buy at the supermarket.
Why? Because I had 2 or 3 half-used bottles of shampoo and I don't like to waste stuff. And now, I can definitely tell that my hair hates regular shampoo. It gets all oily and yucky super fast, it feels weird. I can't explain. And I could wait to get back on my *dear* NEW Shampoo Bar (NEW is the name!). It doesn't come with the cinnamon stick anymore, but with a cool advice instead.
And yes, that's my good old crusty tin box, where I keep my shampoo bars and soaps. And yes I know it looks disgusting. And yes, those are little remaining pieces of every shampoo or soap bar I've owned.