Acne is only cosmetic. FALSE. Acne is a disease that gets worse if left untreated. It might not be a life-threatening condition, but it affects how you look and feel about yourself. Bacteria that gets into your pores and clogs them up can quickly multiply, leading to an out-of-control situation. Blemishes should be taken seriously and treated as soon as possible to keep them under control and to prevent permanent scars.
The use of antimicrobial peptides against P. acnes is under investigation as a treatment for acne to overcoming antibiotic resistance.[10] In 2007, the first genome sequencing of a P. acnes bacteriophage (PA6) was reported. The authors proposed applying this research toward development of bacteriophage therapy as an acne treatment in order to overcome the problems associated with long-term antibiotic therapy such as bacterial resistance.[178] Oral and topical probiotics are also being evaluated as treatments for acne.[179] Probiotics have been hypothesized to have therapeutic effects for those affected by acne due to their ability to decrease skin inflammation and improve skin moisture by increasing the skin's ceramide content.[179] As of 2014, studies examining the effects of probiotics on acne in humans were limited.[179]
Considerations: Benzoyl peroxide is able to produce complete clearing of acne only when used in an adequate dosage and within a properly applied benzoyl peroxide regimen. Some dryness, redness, and itchiness is to be expected in the first few weeks of use.6 Scientists call this initial period the "hardening effect" of benzoyl peroxide. About 1-3% of people are allergic to benzoyl peroxide and experience an inflammation of the skin or severe crusting.3This should not be confused with the "hardening effect" of benzoyl peroxide. Benzoyl peroxide, like any other peroxide, can bleach hair and fabric.1

The severity of acne vulgaris (Gr. ἀκµή, "point" + L. vulgaris, "common")[23] can be classified as mild, moderate, or severe as this helps to determine an appropriate treatment regimen.[19] Mild acne is classically defined by the presence of clogged skin follicles (known as comedones) limited to the face with occasional inflammatory lesions.[19] Moderate severity acne is said to occur when a higher number of inflammatory papules and pustules occur on the face compared to mild cases of acne and are found on the trunk of the body.[19] Severe acne is said to occur when nodules (the painful 'bumps' lying under the skin) are the characteristic facial lesions and involvement of the trunk is extensive.[19][24]

Acne appears when a pore in our skin clogs. This clog begins with dead skin cells. Normally, dead skin cells rise to surface of the pore, and the body sheds the cells. When the body starts to make lots of sebum (see-bum), oil that keeps our skin from drying out, the dead skin cells can stick together inside the pore. Instead of rising to the surface, the cells become trapped inside the pore.