Board Thread:Boruto Discussions/@comment-33255203-20171004210031/@comment-734582-20171027140209

Ninjachris wrote: Ok the seal was placed on kayuga but it didn't disappear as you claimed only transferred to her, which means it would have remained with them if not placed on her so it was permanent until used. I have no idea what you're trying to prove here. The seals returning to Hagoromo indicates that this was simply the power he had lent them. Six paths Chibaku Tensei is cast with those seals, but the seals themselves aren't transferred to Kaguya, they were transferred back to Hagoromo as was clearly and unambiguously shown. We don't know if they are permanent, but that doesn't matter. Hinata has no such marks.

So by everything we know and observe, Hamura's power didn't stick to hinata because she lacked the underlying ingredients to maintain it, while Naruto and Sasuke had their power independent of Hagoromo, just shaped by him. The seals were only ever intended as a temporary measure.