Value Village ／ Beauty
This answer is a draft. It stays unpublished until legal review and source verification are complete.
Hair oil has become a staple worldwide, but "when, where and how much" can turn the result from glossy to greasy. In Japan it is sold as a type of leave-in conditioner (洗い流さないトリートメント, arainagasanai torītomento), and the way to use it is fairly settled. This article sets out that approach, and what a hair oil may legally claim here.
| Hair length | Amount (guide) | Where |
|---|---|---|
| Short | 1 drop to half a pump | Ends |
| Medium | 2–3 drops (1 pump) | Ends to mid-lengths |
| Long | 3–4 drops (1–2 pumps) | Ends to mid-lengths |
| When | Purpose |
|---|---|
| After towel-drying, before the hair dryer | Protects the hair surface from heat and friction (the main use) |
| Finishing a style | Shine and taming frizz. A very small amount |
| Dryness or static during the day | A little on the ends |
[Verify] Check the 56 items against MHLW notice Yakushoku-hatsu 0721 No. 1. Follow the product label for amounts.
Towel-dried, damp hair is the main place to use it. It is applied to protect the surface from the heat and friction of the dryer.
It causes clogged pores and greasiness. Scalp products are a separate category (scalp lotions and the like).
It weighs hair down, attracts dust, and what is not washed out stains the pillow. Start small and add.
Hair is made of dead cells, and damaged parts do not recover. Oil coats the surface to improve feel and shine; legally, too, it cannot be called "repair".
Avoid using on the skin any product not labelled for face or body. The fragrance and other ingredients are formulated differently. Follow the use stated on the label.
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https://www.mhlw.go.jp/file/06-Seisakujouhou-11120000-Iyakushokuhinkyoku/kesyouhin_hanni_20111.pdf
https://www.jcia.org/user/business/advertising
https://www.dermatol.or.jp/qa/qa17/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.
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