What causes facial peeling after sun exposure?

Generally, facial peeling after sun exposure may be caused by factors such as dry skin, prolonged sun exposure, solar dermatitis, seborrheic dermatitis, or pityriasis alba. If discomfort occurs, it is recommended to seek timely medical evaluation and treatment at a reputable hospital. Specific analyses are as follows:

1. Dry Skin

Low water content in the stratum corneum and weakened skin barrier function accelerate moisture loss after sun exposure, leading to dryness and shedding of keratinocytes. Use a gentle moisturizing cream daily, keep facial cleansing water temperature around 37°C, avoid frequent exfoliation, and apply a ceramide-containing moisturizer before going outdoors.

2. Prolonged Sun Exposure

Extended ultraviolet (UV) exposure damages the skin barrier, causing epidermal cell injury and death, resulting in peeling. Immediately move to a cool, shaded area, apply a cold compress for 15 minutes, soothe with aloe vera gel, and subsequently avoid outdoor activities between 10 a.m. and 4 p.m.

3. Solar Dermatitis

An allergic reaction of the skin to UV radiation triggers inflammation, leading to damaged and shedding epidermal cells, accompanied by redness and itching. Treatment under medical guidance may include calamine lotion, levocetirizine hydrochloride tablets, and hydrocortisone butyrate cream. In severe cases, vitamin C tablets may be added.

4. Seborrheic Dermatitis

Overactive sebaceous glands combined with Malassezia fungal infection can worsen inflammation upon sun exposure, causing redness and peeling. Under medical supervision, treatments may include ketoconazole cream, tacrolimus ointment, and vitamin B6 tablets. Maintain facial cleanliness and avoid high-sugar diets.

5. Pityriasis Alba

Caused by dry or malnourished skin, symptoms worsen after sun exposure, presenting as light-colored patches with fine scaling. As directed by a physician, use urea-vitamin E cream, compound lactic acid cream, and multivitamin tablets. Practice proper sun protection when outdoors and increase intake of fresh fruits and vegetables.

In daily life, consistently use sunscreen with SPF 30+ and PA+++, reapplying every two hours; choose mild facial cleansers to avoid over-cleansing; maintain regular sleep patterns and stay hydrated while supplementing with adequate vitamins; avoid peeling or tearing flaking skin to prevent wounds and infections.