Acne vulgaris is the most common type of acne, affecting millions of people worldwide. It manifests as blackheads, whiteheads, papules, pustules, and sometimes cysts or nodules. This type of acne is primarily caused by clogged pores due to excess oil production, dead skin cells, and bacteria. Treatment options include over-the-counter products containing benzoyl peroxide or salicylic acid, prescription medications, and lifestyle changes such as a balanced diet and regular skin cleansing routines.