I remember being a teen and using BIC disposables razors.Nice pic,I dont know if photoshop or not but looks so cool!
Looks like a cartridge and some of that grass is ingrown. I bet a DE would have scraped down to the dirt! Cool picture.
It looks like it removed 3 weeks worth of a 4 week growth. I'm not that impressed (at least by the razor, the pic is cool).