I would say yes it should grow back, from what I have experienced. But I guess it also depends on how deep the scrape is?
A few months back Kelso had a small abrasion near his eye, it healed fully, hair grew back, no scar in about 2 weeks.
Also Allie stuck her nose under a wooden fence and scraped the leather part of her nose. I put some bag balm on it everynight, but it did take a bit longer to heal...about a month. No scar for her either.
hope that helps, i was worried too
A few months back Kelso had a small abrasion near his eye, it healed fully, hair grew back, no scar in about 2 weeks.
Also Allie stuck her nose under a wooden fence and scraped the leather part of her nose. I put some bag balm on it everynight, but it did take a bit longer to heal...about a month. No scar for her either.

