Gaius hums thoughtfully, plucking each bur away-- and...is that a twig? It is. He's got a twig in there. "Slide down a little bit," he says after a moment, when he's sure all of the forest that Estinien smuggled in with him is now outside the tub. "So I can get your hair wet and clean it properly."

It's soap, and not fancy oils and shampoos. But it's better than nothing, and at least it'll get the grime out.