I looked, but I couldn't find an answer. I always bring my own. Not because if allergies I'm just picky.
I know this is to late for you, but I will look and see what shampoo it is on the Splendor.
Oh hang on someone said Ivory shampoo. Someone else said Dove shampoo. I won't use either brand so I'm bring the good stuff. Here is the link. BTW is this you?