Riversoil LLC | Skincare / BodycareOEM Manufacturing (Tokyo)
Cosmetics OEMOfficial Site Verified6-13-16-501 GinzaVerified May 2026
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Service
OEM
Min lot
100個〜（デリケートゾーン品は500個〜）
Lead time
Ask
Founded
2021
Features of Riversoil LLC
Riversoil LLC is a 2021-established cosmetics OEM manufacturer based in Tokyo.They handle manufacturing of Skincare, Bodycare, Body Soap / Body Wash, Body Cream / Lotion, Intimate Care and more.The minimum lot size is 100個〜（デリケートゾーン品は500個〜）~.
About Riversoil LLC OEM Manufacturing
A cosmetics OEM manufacturer established in 2021, based in Ginza, Chuo-ku, Tokyo. Actively develops OEM manufacturing of intimate area care and feminine care products. Handles a variety of formulations including lotions, oils, serums, gels, and soaps. Offers ultra-small lot production from 100 units (500 units minimum for intimate care products).
Business Activities of Riversoil LLC
- Riversoil is a business operator engaged in the planning
- development
- manufacturing
- OEM contract manufacturing
- retail sales
- and sales support of cosmetics and household products including detergents and hygiene items. The company accommodates small-batch manufacturing from 100 units onwards
- providing comprehensive services spanning quasi-drug manufacturing
- package design
- and sales support. It also offers cosmetics development utilizing aquaporin-related raw materials.
Riversoil LLC Features & Strengths
- Active femcare-product OEM
- Ultra-small lots from 100 units
- Multiple dosage forms
Riversoil LLC Certifications & Equipment
Certification details can be confirmed by contacting the manufacturer. Equipment details available upon request. Ask for free
Company History of Riversoil LLC
- —
Riversoil was established in June 2021 in Ginza, Chuo Ward, Tokyo by Tamaki Kawamuko and Kaori Tsuchiya. The company commenced operations with a primary focus on small-batch OEM manufacturing and sales support for cosmetics and household products.
Executives of Riversoil LLC (2)
| 代表社員 | 川向 珠希 |
| 代表社員 | 土谷 かおり |
Riversoil LLC Supported Categories
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FAQ about Riversoil LLC
Where is Riversoil LLC located?
Riversoil LLC is located in Tokyo, 中央区, 東京都中央区銀座6-13-16-501.
What types of products can Riversoil LLC manufacture?
They handle manufacturing of Skincare, Bodycare, Body Soap / Body Wash, Body Cream / Lotion, Intimate Care and more.
Does Riversoil LLC support ODM?
Riversoil LLC supports OEM.
What is the minimum lot size for Riversoil LLC?
The minimum lot size is 100個〜（デリケートゾーン品は500個〜）~.
Common Pre-Order Questions
Frequently asked questions from buyers before placing an OEM order. Manufacturer-specific details can be confirmed via a quote request.
What are typical minimum order quantities (MOQ)?
MOQs vary by manufacturer, but listed partners handle anything from small lots (100–1,000 units) up to large-scale production (100,000+). The lower bound depends on raw material sourcing and packaging specs, so confirm exact MOQs in your quote request.
How long does it take from quote to delivery?
Quote replies typically take 3–7 business days. From there, mass-production delivery (including prototyping) generally takes 2–4 months. New formulation development or certification work can extend this past six months. Final schedule is set during the quote phase.
Are prototype or sample fees charged?
Most manufacturers charge for prototypes (typically a few hundred USD up), but the cost is often credited back once mass production is confirmed. Existing-formula samples are sometimes free. Policies vary, so confirm in advance.
Can we sign an NDA?
Yes, generally. Quote requests routed through OEM JAPAN can be covered by an NDA before formulation or recipe details are shared. Either the manufacturer's or the buyer's NDA template can be used.
Will the manufacturer help with PMDA (cosmetics) filings?
Manufacturers licensed as cosmetic marketing-authorization holders typically assist with manufacturing notifications and ingredient-label review. Quasi-drugs (medicated cosmetics) require a separate approval process with longer lead times.
Will stability (use-by) testing be performed?
Yes. Accelerated tests (40°C / 3 months) and long-term tests (25°C / 6–12 months) are commonly run to set the use-by period. Cost ranges from several hundred to several thousand USD depending on test items; minimum duration is roughly 3 months.
What container and filling formats are supported?
Tubes, bottles, jars, pouches, sprays, and airless containers are widely supported. Sample-size fills and material specifications (PET, glass, aluminum, etc.) are usually negotiable — confirm in the quote request.
Contents
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Basic Information
Location
6-13-16-501 Ginza
Founded
2021
Minimum Lot
100個〜（デリケートゾーン品は500個〜）
Official Website
https://www.riversoil.net/Show all company info
Representative
代表社員 川向 珠希
Incorporated
6/2021
Capital
300万円
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