Acne occurs when skin pores are blocked by excess oil, dead skin cells, and bacteria. Inflammation from these breakouts can damage deeper skin layers. The healing process sometimes leaves behind marks including discoloration (red, brown or black spots) or texture changes (indentations or raised areas). Genetics, hormones, lingering lesions, untreated acne, and certain skin types contr... https://theklarity.com/acne-acne-scars/