Value Village ／ Beauty
This answer is a draft. It stays unpublished until legal review and source verification are complete.
Cracked heels and darkened elbows and knees are worries tied to the season and to footwear culture, and in Japan "heel care" (かかとケア) is a product category in its own right. This article sorts out whether to file or to moisturise, and where the cosmetic category ends and medicine begins.
| Area | Cause | Care | Points to note |
|---|---|---|---|
| Hard skin and cracks on the heel | Dryness, friction (bare feet, sandals, hard shoes), body weight. The heel has no sebaceous glands and dries easily | File lightly after a bath (no more than once a week) → moisturise → cotton socks | Over-filing backfires. Bleeding or pain is a matter for medical care |
| Darkened elbows and knees | Thickened skin and pigmentation from friction (leaning elbows on a desk, kneeling) and dryness | Moisturise and reduce friction. Scrubs a few times a month at most | The harder you rub, the darker it gets |
| Deep heel cracks with itching or small blisters | Possibly a form of tinea pedis (athlete's foot), the hyperkeratotic type | Have it checked at a dermatology clinic | Hard to tell apart on your own |
[Verify] Check the classification of urea products against MHLW materials, and the description of tinea pedis against the Japanese Dermatological Association's "Guidelines for the management of dermatomycosis".
Over-filing triggers the skin's defence response, making it thicker and the cracks deeper. No more than once a week, lightly, after a bath while the skin is soft. The same applies to electric callus removers.
If it does not improve despite continued moisturising, and cracks with a white, soggy look, it may be a form of athlete's foot. A microscope test at a dermatology clinic (covered by Japanese health insurance) gives an answer in minutes.
The main cause of the darkening is pigmentation from friction, and the harder you rub, the darker it gets. The answer is moisturising and cutting down the habit of leaning on elbows or rubbing knees.
Petroleum jelly (ワセリン, waserin) is a protective layer that slows water loss, and has no medicinal effect of its own (even medicinal white petroleum jelly is labelled "protects the skin"). The way to use it: a thin film on still-damp skin after a bath, then socks.
Cotton socks after moisturising are a standard way people in Japan keep moisture in the heel, and no problem is pointed out as long as the fabric is not tight and does not trap sweat. Do take care with low-temperature burns if you combine socks with an electric blanket or hot-water bottle (see the article on hot-water bottles).
---
https://www.dermatol.or.jp/uploads/uploads/files/guideline/
https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/kenkou_iryou/iyakuhin/keshouhin/index.html
https://www.dermatol.or.jp/qa/qa16/index.html
⚠️ 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.
Tell us if this has changed
Approved contributions keep the contributor's name, shown in five languages.
Other languages：日本語 ／ 简体中文 ／ 繁體中文 ／ 한국어
Value Village is not a government body. Always confirm procedures on the official site.
Written by Value Village from public sources. Nothing here is reproduced from another site.