I do not know im sorry
A good question for all of us who enjoy crafts. Here you go.
Use a clear acrylic spray. Mod Podge. Clear glaze.
I’ve used an acrylic sealant spray
Here's a video that might help - https://www.youtube.com/watch?v=E-FV0okwNFE
I make sure it is completely set, then I pour resin to seal it and make it UV protected