Re: Safe to apply Formby's tung-oil with fingers
I use gloves myself, since there are petro-chemicals in the finish. But folks have been applying it for years with bare fingers too.
Formby's instructions say to use em and I've already had enough exposure to petroleum solvents in my life that I try to take the extra precautions whenever I can now. Some folks are fairly resistant to those solvents and some react fairly quickly, either way prolonged exposure isn't good for ya. Better safe than sorry.
The same applies for Tru-Oil or any other combo-type oil finish too. Unless they're specifically listed as pure oil finishes they're a combination of oils, mineral spirits, turpentine, varnish, and/or similar ingredients.
Get the nitrile rubber gloves instead of just plain latex if you can get them since the petroleum solvents will attack the latex. Even the cheap PVC gloves work better than latex but they will break down from the solvents eventually too.
I'm really surprised that Formby's doesn't have a link to the MSDS sheet on their website.
Attached is a PDF of it if you want to see what's all in there and what they list as needed protection.