Acne vulgaris is caused by clogged hair follicles and pores that become infected by bacteria. It can be managed through prevention methods like applying apple cider vinegar or using over-the-counter treatments containing benzoyl peroxide, salicylic acid, or antibiotics. For more severe cases, oral medications like retinoids or isotretinoin may be used. While treatment may not fully eliminate existing acne scars or marks, maintaining clear skin can help prevent further scarring. Questions are welcomed about acne causes, treatments, and management.