Caleb chuckled softly, feeling a lot more at ease than he had since coming here and, probably, quite a while before that too. "I don't think they'd mind a drink," he said. The plants in Caduceus' room were alive in as much as anything in here was alive. If the cats could eat, and they could derive nourishment from the food prepared here as well, then he supposed there was no reason why the plants weren't just as capable of it. And there were the bugs in Yasha's room that were also quite alive.
He lowered himself a bit further into the water and tipped his head back, instinctively giving Caduceus a little more access and space to move around. In the water, the height difference didn't matter as much. And he didn't want Caduceus to have to move around or strain in any way when he was going to such lengths to also make Caleb feel cared for. It felt nice, too. Especially the little touches that Caduceus snuck in that might have been meant to go unnoticed. And his hair was a little redder once it was clean. It was still somewhere between auburn and ginger, but the bright, fiery strands were a little more obvious now. There were also a few strands of grey woven through there, bits of dark and bits of light.
When Caduceus moved to rinse his hair out, Caleb reached back in an attempt to help. He wasn't sure how helpful it actually was, but he tried to run his fingers through the thick curls and rinse the soap out while undoing some of the tangles that just perpetually existed.
He probably should have cared a little bit more about himself and, as an extension, his appearance. But he didn't. Even moments like this were rare. Relaxing was rare. Letting someone else care about him was rare. Veth had shoved her way into his life and he was incredibly grateful for that. He supposed in a lot of ways, the rest of the Nein had shoved their way in too. But Caduceus in particular had sort of just wandered in. Meandered. Got lost on his way to somewhere else. He was so completely different than the rest of the Nein and Caleb knew that he struggled with some of the things that they'd done, but there was the promise of respite within in him somewhere. And Caleb, against everything he told himself that he was, gravitated towards that.
"You can tell you have siblings," Caleb said, shifting to turn around once his hair was rinsed out. "You're a natural at this. You've probably had to wash a lot of hair." And not just because Firbolgs had a lot of hair in the first place.