Im on differin gel because randomly at the beginning of this year i began to get forehead bumps and small flare ups on face ( when i usually have clear skin) doc provided me with differin but my spots are getting darker and i dont see any results?

Acne is an inflammation of the sebaceous glands of the skin. After any inflammation, the skin may change color just where the bumps and flare ups were. This will take time to clear; using a drugstore acne cream may help clear faster but this will happen over weeks to months. If you feel your skin is worse or the same, consult your prescribing physician.