What Causes Acne Scars to Turn Dark?

Darkening of acne scars can be attributed to inflammation of hair follicles and sebaceous glands, the use of inferior cosmetics, ultraviolet (UV) radiation, endocrine disorders, and drug irritation. It is recommended to seek medical attention promptly and receive appropriate treatment under medical guidance. Details are as follows:

1. Inflammation of Hair Follicles and Sebaceous Glands

After acne appears on the skin surface, frequent squeezing with hands may lead to bacterial infection and damage to the skin's stratum corneum, further causing inflammation of hair follicles and sebaceous glands, resulting in pigmentation and uneven skin texture. Strengthening facial skin cleansing is crucial, using mild facial cleansers and washing the face with warm water morning and evening can help make the skin clear and refreshing. Laser therapy can be considered as necessary, which generates warm stimulation to activate the skin's repair mechanism, promoting collagen regeneration and achieving smoother skin.

2. Use of Inferior Cosmetics

Frequent use of inferior cosmetics after acne develops on facial skin may damage the skin's stratum corneum, leading to pigmentation, swelling, and pain. Consult a dermatologist and choose suitable cleansing and care products under their guidance. Radiofrequency therapy can be considered as necessary, leveraging the thermal effect of radiofrequency current to elevate tissue temperature, promoting subcutaneous fat decomposition, achieving collagen remodeling, and reducing acne scars.

3. UV Radiation

Prolonged exposure to sunlight during acne scar treatment may activate subcutaneous melanin, leading to excessive melanin synthesis and potential pigmentation inconsistencies, impacting aesthetics. Adequate sun protection measures, such as using umbrellas or wearing sunhats, are essential when outdoors. Microneedling therapy can be considered as necessary, utilizing tiny needles to stimulate the skin, allowing more active ingredients to penetrate deeply, inducing skin self-repair.

4. Endocrine Disorders

Caused by either excessive or insufficient hormone production, endocrine disorders may affect the metabolism of toxins in the body, leading to pigmentation. Chemical peeling can be employed to stimulate skin regeneration and collagen rearrangement.

5. Drug Irritation

Improper use of medications during acne scar treatment may damage the skin's stratum corneum, manifesting as redness, burning sensations, desquamation, and pigmentation. Discontinue using overly irritating drugs and consult a doctor to adjust the treatment plan. Pay close attention to skin condition during the medication process. Microdermabrasion can be considered as necessary, mechanically abrading damaged skin to promote tissue healing.

Additionally, factors such as skin heterochromia may also be involved. Consult a dermatologist for examination to identify the underlying cause and receive targeted treatment. During treatment, maintain a bland diet, avoiding overly stimulating foods like fried items.