1) White heads:-
It remains under the skin & are very small.
2) Blackheads:-
Clearly visible, they are black, appear on the surface of the skin, and remember all the black heads is not caused by dirt.
3) Papules:-
Visible on the surface of the skin, they are small bumps usually pink.
4) Pustules:-
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.
6) Cysts:-
Clearly visible on the surface of the skin, they are Painful & filled of pus, cysts, can easily cause scars.