Sealant for vinyl dolls?

Hello! I´m quite new to both the hobby and this forum but I have done a couple of customizations on resin dolls. I usually use Tamiya TS-80 Flat Clear Spray Matt to seal and it has worked fine. However,now I´m interested in customizing an Imomodoll and since the material is different, I´m researching how different sealants will react to it.
Some people have said that some sealants make the vinyl feel sticky/dirty or it simply doesn´t work but didn´t specify which ones. Now I´m a bit afraid of using the Tamiya one I have and ruin the doll. I´m sure most of you have way more experience than me, so what do you use for vinyl dolls like Imomodolls? Did someone tried using TS-80?

MSC is currently unavailable in my country for some months, but if it´s really the only option I can try to get it on Ebay or some similar site.Thanks for reading!

 

Thank you! Yes,I think I´ll give it a try on a place like the headcap just to see what happens.