Board Thread:DC's Legends of Tomorrow discussions/@comment-9346948-20180306021038/@comment-27673963-20180327110552

We do know however that absorbing the life force does restore him similar to the way that the Lazarus Waters do so it is entirely possible that the life force drain does maintain his youth.

Why is everyone discussing stuff from season 4, isn't that the season we ignore and pretend didn't happen :D