Question: Does glycerin draw water from your skin when the humidity is low? (updated)

I’m still on a quest to figure out the answer to this question…so let’s review information I’ve found so far. What is a humectant? “Humectancy or hygroscopy is the tendency of a substance to attract water from the surroundings by absorption and adsorption at defined conditions (temperature, humidity).” (page 26, this review). Is glycerin a…