Value Village ／ Beauty
This answer is a draft. It stays unpublished until legal review and source verification are complete.
What to do after sunburn is a summer staple in expat forums. In Japan, dermatologists' public-education material describes sunburn as "a mild burn", and the order of steps is well established.
| Stage | Do | Do not |
|---|---|---|
| Immediately, same day | Cool (wet towel, running water; no ice directly on the skin), drink fluids | Rub; hot baths; lotions containing alcohol |
| While red and hot | Gentle moisturiser (one whose label says it can be used after sun), loose clothing | Brightening ingredients, peels, scrubs (irritation) |
| When the skin starts to peel | Do not pull it off; keep moisturising | Exfoliation |
| Blisters, severe pain, fever, chills | Dermatology clinic or other medical care (as a burn) | Piling on over-the-counter medicines on your own judgement |
| Once settled | Use sunscreen to keep UV off (skin after sunburn is even more vulnerable) | — |
[Verify] Check the relevant passages of the Dermatological Association's explanation and the Ministry of the Environment manual. Check quasi-drug claim wording against Ministry of Health, Labour and Welfare (MHLW) materials.
Brightening and peeling ingredients irritate inflamed skin. Cool → moisturise comes first; brightening waits until the skin has settled (and the quasi-drug claim goes only as far as "prevents").
The cold gives temporary relief, but plant ingredients can cause a rash. Clean cold water and a wet towel are the reliable choice.
The skin beneath is still thin, and peeling makes a wound. Wait for it to come off by itself, and moisturise.
Skin after sunburn is generally described as more susceptible to UV, so sun protection during recovery is what matters most.
Sunburn is inflammation of the skin, and the Ministry of the Environment's manual links cumulative UV exposure to the risk of skin cancer and cataracts. The idea that "a golden tan is healthy" is not endorsed in public-health education.
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https://www.dermatol.or.jp/qa/qa6/index.html
https://www.env.go.jp/chemi/uv/uv_manual.html
https://www.mhlw.go.jp/file/06-Seisakujouhou-11120000-Iyakushokuhinkyoku/kesyouhin_hanni_20111.pdf
⚠️ Editorial note: the source URLs above were identified by search. Our working environment cannot reach go.jp domains, so the contents have not been checked against the text. Verify every source before publication and record who checked it and when.
What we share here are ideas and everyday practices passed down among people living in Japan, together with general information drawn from public sources. They are not official recommendations, and they are not professional instruction. Practices vary between households and regions.
This is general information. Results vary from person to person and depend on your own conditions and surroundings.
Please decide for yourself, using your own judgement, whether any of this suits your situation. We cannot accept responsibility for any damage, loss or injury arising from following this article.
Cosmetics are not medicines and are not meant to diagnose, heal or prevent any condition. If your skin reacts, stop using the product and see a dermatologist.
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