I came up with this method of sealing dolls from my own experimentation in 2017. As you can see, it was posted on my blog when I concocted the recipe and has been there ever since. I have been using it since then and many have passed it along. I no longer blog there as I have my own Facebook Group where I share my knowledge, experience and experimentation. However, I have left this up on my blog for anyone to use as long as they give me credit for coming up with it. With a recent resurgence of interest and PMs asking for my recipe, I thought I would create this post so that in the future it can be searched out here. Thank you all for your part in the journey and keep up the good work!
EDITED TO ADD: I want to remind you all that Soft Touch Varnish does not contain any UV protectors in it. When I use it, I cut it in half with Golden Polymer Varnish so that I get some of the UV protection from the Golden Polymer Varnish. I also have done this with all Golden Polymer Varnish, which is the best thing to do for UV protection. When air dry painting my dolls, I seal them with RebornFX sealer before varnishing. The sealer is an isolation coat that also has UV protection in it. The RebornFX Sealer does add some sheen when cured but then the matte varnish mix takes care of that.