Why do you scrape your mouth with a traditional razor?

Disadvantages of a traditional razor -

1, the blade is not fast enough; 2, the gap between the cutters is large; 3, it does not fit tightly with the face; 4, it will scrape your mouth when accelerating; 5. It can also cut the skin if you don't go in the right direction.

Blood is definitely not coming out of the follicle, it's the whole piece of skin scraped off, I think, look more closely.

Rubbing a little bit of facial grease, scraping up more comfortable.