The core Oshima Tsubaki oil is single-ingredient camellia seed oil, and several formulas are labelled 無香料・無着色 (fragrance-free, colorant-free) with the hair colour treatments stated silicone-free, paraben-free and diamine-free. However most shampoos, conditioners, creams and treatments contain methylparaben, propylparaben, dimethicone and synthetic conditioning polymers, so clean claims are product-specific, not brand-wide.
| Ownership | Independent: Oshimatsubaki Co., Ltd. (holding company, est. 1977, Tokyo), with subsidiary Oshima Tsubaki Honpo Co., Ltd. (manufacturing, Hachioji, est. 1948) and Oshima Tsubaki Seiyusho Co., Ltd. (oil press facility on Oshima Island, founded 1927) |
| Where made | Minami-no Factory, Hachioji, Tokyo (main line); Oshima Tsubaki Seiyusho oil press on Izu Oshima Island, Tokyo (limited-edition Izu Oshima line) |
| Price | ¥660 to ¥3,080 per item (approx. $4 to $21), mass-market drugstore/supermarket price point |
| Cruelty free | Not stated |
| Vegan | Not stated |
| Organic | Not stated (no JAS or other organic certification found) |
| Certifications | None found stated on brand site (no organic, vegan, or cruelty-free certification badges on company, FAQ, or product pages) |
| Packaging | PET plastic bottles, tubes and jars; refill pouch offered for Oil Shampoo (オイルシャンプー, 550mL) to reduce plastic |
Why there is no score: No ingredient lists published. No verdict is given. Neither a full ingredient read nor a check of the certifications against the certifiers own registers has been completed for this brand, so there is no basis for judging it either way. No overall score is published. This is a heritage single ingredient camellia oil house and the one product that discloses ingredients is 100 percent Camellia Japonica Seed Oil, but 17 of its 18 products publish no ingredient list, so a whole brand figure cannot be measured.
Catalogue 18 products, 1 with an ingredient list, 17 without.
Last checked 22 July 2026.
Not yet independently verified. The certifications listed for this brand are as the brand states them. They have not yet been checked against the certifiers own registers, so they should be read as a claim rather than a confirmed fact.
We analysed the full Oshima Tsubaki product catalogue of 1 products, categorising every listed ingredient by function, origin (raw natural, naturally derived or synthetic) and safety concern. Percentages show the share of each formula that is natural or naturally derived.
Coverage: Full catalogue read: all 18 products.
Analyst note: Full catalogue read: 18 products in the catalogue, 18 recorded, ingredient lists read for 1 product or shade variants. 17 products publish no ingredient list anywhere we could find, and are listed here so the gap is visible rather than hidden. 0 ingredients could not be categorised.
| Product | Natural | Ingredients | Flagged |
|---|---|---|---|
| Oshima Tsubaki Camellia Oil 100% (大島椒) | — | 0 | 0 |
| Oshima Tsubaki Hair Spray (ヘアスプレー) | 100% | 1 | 0 |
| Oshima Tsubaki Hair Water (ヘアウォーター) | — | 0 | 0 |
| Oshima Tsubaki Hair Cream Moist (ヘアクリーム しっとり) | — | 0 | 0 |
| Oshima Tsubaki Hair Cream Light (ヘアクリーム さらさら) | — | 0 | 0 |
| Oshima Tsubaki Hair Essence (ヘアエッセンス) | — | 0 | 0 |
| Oshima Tsubaki Excellent Shampoo (エクセレントシャンプー) | — | 0 | 0 |
| Oshima Tsubaki Excellent Treatment (エクセレントトリートメント) | — | 0 | 0 |
| Oshima Tsubaki Premium Shampoo | — | 0 | 0 |
| Oshima Tsubaki Premium Conditioner | — | 0 | 0 |
| Oshima Tsubaki Premium Treatment | — | 0 | 0 |
| Oshima Tsubaki Oil Shampoo (オイルシャンプー, incl. refill size) | — | 0 | 0 |
| Oshima Tsubaki Hair Colour Treatment Dark Brown | — | 0 | 0 |
| Oshima Tsubaki Hair Colour Treatment Natural Black | — | 0 | 0 |
| Oshima Tsubaki Camellia Oil, Izu Oshima Limited Edition | — | 0 | 0 |
| Oshima Tsubaki Oil Shampoo, Izu Oshima Limited Edition | — | 0 | 0 |
| Oshima Tsubaki Skincare Soap, Izu Oshima Limited Edition | — | 0 | 0 |
| Oshima Tsubaki Skincare Cream, Izu Oshima Limited Edition | — | 0 | 0 |
Full ingredient breakdown
The full ingredient by ingredient breakdown of all 1 Oshima Tsubaki products (1 ingredients, each categorised by function, origin and safety concern) is free with an account.
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