The technique described is a plastic dissolved in a hazardous solvent. Spread it on your work and, when the solvent evaporates, you have a thin layer of plastic (of unknown quality) as a finish.
You can get that in a rattle can at the local DIY store, they call it polyurethane. You can get it in clear or color of your choice, gloss, semi-gloss or matte. I think the people who make it paid more attention to the quality of the residual plastic finish than did the guy who made the video. Ditto the nature of the hazardous solvent.
Or you can get shellac, lacquer, tung oil, etc.
I could go on, but you get the idea.