Immediate First Aid for Sunburn
- Move out of the sun immediately. Find shade or go indoors.
- Cool the skin with cool (not ice cold) water or a cool damp cloth for 15–20 minutes.
- Hydrate — drink plenty of water or oral rehydration solution.
- Moisturize — apply aloe vera gel or a gentle, fragrance-free moisturizer.
- Avoid tight clothing, further sun exposure, and popping blisters.
- Pain relief — take OTC ibuprofen or acetaminophen for pain and inflammation.
Self-Care vs. When to See a Doctor
OTC Products at Japanese Pharmacies
Aloe vera gel — found in large quantities at Japanese pharmacies and beauty stores. Japanese brands like Mentholatum offer high-concentration aloe gels specifically formulated for sunburn cooling.
Calamine lotion — available at pharmacies; soothes itching and mild blistering.
Weak topical steroid creams — for significant inflammation; ask the pharmacist for help.
Oral ibuprofen or loxoprofen — reduces inflammation and pain from sunburn. Loxonin S is widely available.
Oral rehydration solution (OS-1) — for dehydration accompanying severe sunburn.
Sunscreen — Japan has exceptional sunscreen products. SPF 50+ PA+++ formulations (the PA system measures UVA protection specifically) are widely available at pharmacies and convenience stores at reasonable prices. Anessa, Biore UV Aqua Rich, and Skin Aqua are popular brands.
Finding a Doctor in Japan
For sunburn complications, visit a dermatology clinic (皮膚科, *hifuka*). For systemic symptoms like fever and severe dehydration, visit an internal medicine clinic (内科, *naika*) or emergency room.
Translation devices have limited accuracy in medical settings. We recommend clinics with English-speaking staff. Find English-capable dermatology clinics at Traveler's Hospital hospital search.
Estimated Costs
Prevention Tips for Japan
- Apply SPF 50+ sunscreen 20 minutes before going outside and reapply every 2 hours.
- Japan's UV protection parasols (日傘, *higasa*) are highly effective and widely sold — do not hesitate to use one as a tourist.
- Wear UV-blocking clothing — Japan has an extensive range of "UV cut" (UVカット) shirts, arm covers, and hats.
- Seek shade during peak UV hours: 10 a.m. to 2 p.m.
- Use UV-blocking contact lenses or sunglasses to protect eyes from photokeratitis.
Useful Japanese Phrases for Your Doctor Visit
Internal Links
If you are experiencing severe overheating symptoms, see the difficulty breathing emergency guide. For insect bites that may complicate with sunburn-related open wounds, see the insect bites guide. Find dermatology clinics at Traveler's Hospital.
FAQ
Q: Does Japan's famous humid heat make sunburn worse?
A: Yes, indirectly. High humidity makes you sweat more, which washes off sunscreen faster. It also creates a false sense of comfort because evaporative cooling makes you feel cooler, so you underestimate sun exposure time.
Q: Can I get sunburned through clouds in Japan?
A: Yes. Up to 80% of UV rays penetrate cloud cover. Japan's overcast summer days, particularly during the rainy season (tsuyu, early June through mid-July), are still high-UV environments.
Q: What is the PA rating system on Japanese sunscreens?
A: PA stands for "Protection Grade of UVA" and is a Japanese standard for UVA protection. PA+ through PA++++ measures how well the product blocks UVA rays (which cause aging and contribute to skin cancer). PA++++ is the highest level. Always choose SPF 50+ with PA++++ for Japan's summer conditions.
Q: Should I pop sunburn blisters?
A: No. Blisters are the body's natural protection against infection. Popping them increases infection risk significantly. Keep them intact, clean, and covered with a loose non-stick dressing.
Q: Can I still sightsee with a sunburn?
A: You can, but protect the affected area completely from further sun exposure. Use clothing, shade, and high-SPF sunscreen. Continuing to expose burned skin dramatically worsens damage and recovery time.
Q: Is skin cancer from one vacation a risk?
A: A single severe sunburn, particularly one that blisters, significantly increases lifetime skin cancer risk. This is especially true for people with lighter skin. Getting burned once is not harmless — it is a reason to be more careful going forward.