1) White heads:-
It remains under the skin & are very small.
Clearly visible, they are black, appear on the surface of the skin, and remember all the black heads is not caused by dirt.
Visible on the surface of the skin, they are small bumps usually pink.
Clearly visible on the surface of skin, very red at the base and they have pus at the top.
5) Nobules :-
Clearly visible on surface of skin, they are large, solid pimples, painful & are embeded deep in the skin.
Clearly visible on the surface of the skin, they are Painful & filled of pus, cysts, can easily cause scars.