Blackheads and Whiteheads are a specific type of acne known as Comedones. Blackheads are the open comedones and are follicles which have a wider opening. They are filled with plugs of sebum and sloughed-off cells which undergo certain chemical reaction and results into oxidation of melanin. They are typically black in colour.
From these photos, you will get to see a real example of blackhead and its type.
She found the blackhead area very hard.
Definitely there is something wrong.
Something is still inside.
The weirdest form of blackhead guys!