I rather like the idea that Hades let's himself go while Persephone is away. He let's his hair grow long and doesn't shave.

When she comes back each fall, she gives him a haircut and a shave. It could be this regular bonding ritual that they've picked up.



I picture him sitting in a pool and she's seated on the bank behind him, shears and razor in hand, sprucing up her guy.

