I recently bought a bottle of grapeseed oil with which I'm giving the GF frontal massages and other niceties. I was thinking about using it as lube for fingering because her vag is unusually tight or something (she's 18 and I can't get in much past the first knuckle) but I thought that it might be unhealthy for her vagina and researched it. Most web sites said that it can upset the balance of the vaginal flora. However, I've seen videos in which people do use grapeseed oil as lube and use it to finger. How are they doing this? Is there a safe way to do it or do the girls in the videos just accept the health risk and go with it? Thanks in advance for any answers.