Scars (permanent): People who get acne cysts and nodules often see scars when the acne clears. You can prevent these scars. Be sure to see a dermatologist for treatment if you get acne early — between 8 and 12 years old. If someone in your family had acne cysts and nodules, you also should see a dermatologist if you get acne. Treating acne before cysts and nodules appear can prevent scars.
According to dermatologist Dr. Whitney Bowe, some scars are thick, raised hypertrophic scars that stick out above the skin; others are keloid, which are scars that have over-healed, and manifest as dense, rubbery skin tissue. Then, there are atrophic scars that appear as depressions in the skin — they're the most challenging to treat. The three main categories of atrophic scars are:
You can apply all the topicals you want, but unfortunately, most treatments you'll find at the drugstore won't help with acne scars, Hellman says. However, she notes that derma rollers (at-home microneedling devices) may help with acne scarring. If you're on a tight budget, that should be your first stop. You can get one on Amazon for less than $20. (Use yours once a week followed by a Vitamin C serum for best results—here's how to pick the best ones.)
No one factor causes acne. Acne occurs when sebaceous (oil) glands attached to the hair follicles are stimulated at the time of puberty or due to other hormonal changes. Sebum (oil) is a natural substance that lubricates and protects the skin. Associated with increased oil production is a change in the manner in which the skin cells mature, predisposing them to plug the follicular pore. The plug can appear as a whitehead if it is covered by a thin layer of skin, or if exposed to the air, the darker exposed portion of the plug is called a "blackhead." The plugged hair follicle gradually enlarges, producing a bump. As the follicle enlarges, the wall may rupture, allowing irritating substances and normal skin bacteria access into the deeper layers of the skin, ultimately producing inflammation. Inflammation near the skin's surface produces a pustule; deeper inflammation results in a papule (pimple); if the inflammation is deeper still, it forms a cyst.