Wink Silk · The Proof Room
Our Certifications
The Performance Luxury standard means publishing every specification and every certificate, so any brand can be checked against them, including us. Below are the two certifications carried by the Grade 6A 100% Mulberry silk we use, the license numbers, direct links to the public databases where you can look them up, and downloadable copies of the certificates themselves.
I insist on this level of proof because I need it myself, living with a health condition that means I can't afford to trust a label I can't check.
Every Wink Silk piece is crafted by a GOTS & OEKO-TEX certified silk house.
GOTS: Organic from farm to fabric
GOTS is the leading international textile processing standard for organic fibers, verified by an independent third-party audit at every stage of production from cultivation through the finished textile. A GOTS certificate confirms the fiber was grown to organic standards, tracks it through every processing facility, and prohibits harmful chemistry (specific dyes, formaldehyde, heavy metals, chlorine bleach, and many others) at each step. It is issued by an accredited certification body and audited annually. This is what "organic" verifiably means for a textile, and it is why we insist on it for a product that touches your face for one third of your life.
GOTS license number
00284622
Fabric-level · via our silk house
| License holder | Our silk house |
|---|---|
| Certification body | ECOCERT Greenlife |
| Scope | Silk pillowcases and bedding, eye masks, and hair ties (scrunchies) |
| Valid until | January 13, 2027 |
| Public verification | global-standard.org → Find Certified Suppliers |
| Scope Certificate | Download PDF |
| Transaction Certificate | As the scope certificate itself states, specific goods are proven GOTS only by a Transaction Certificate. |
| Wink Silk LLC Trader Certification | In application. License number will be published here on issuance. |
How to verify
- Go to global-standard.org and click "Find Certified Suppliers" (or the "Public Database" link in the main navigation).
- Search by license number: paste 00284622 into the license number field.
- The listing will show the current Scope Certificate, valid dates, certified products, and certification body. Confirm the certification body shows as ECOCERT Greenlife and that the certificate is valid.
- If the certificate does not appear, the certification has lapsed or the number is being verified. Please email us at hello@winksilk.com and we will send the current PDF directly.
OEKO-TEX Standard 100: Safe chemistry, in every fiber
OEKO-TEX Standard 100 is the world's most established independent testing and certification system for textiles tested for harmful substances. Where GOTS certifies the organic origin and processing of the fiber, OEKO-TEX Standard 100 tests the finished textile for hundreds of regulated and unregulated substances, including formaldehyde, aromatic amines from azo dyes, heavy metals, pesticide residues, phthalates, and volatile organic compounds. A Standard 100 certificate means every component of the textile (fabric, thread, buttons, prints) has been tested against Class I limits (the strictest tier, used for products intended for babies and skin-contact articles) and passed. The two certifications are complementary, not redundant: GOTS verifies where the fiber came from and how it was processed; OEKO-TEX verifies what is (and is not) in the finished textile.
OEKO-TEX Standard 100 certificate number · Silk pillowcases
22.HCN.30712
Product Class I · via our silk house
| Issuing institute | Hohenstein (Hohenstein Laboratories, Germany) |
|---|---|
| License holder | Our silk house |
| Scope | Silk pillowcases |
| Product class | Product Class I, the strictest OEKO-TEX product class, the one set for baby articles |
| Valid until | October 31, 2027 |
| Public verification | oeko-tex.com/en/label-check |
| Certificate | Download PDF |
| Wink Silk LLC brand certificate | In application. Certificate number will be published here on issuance. |
OEKO-TEX Standard 100 certificate number · Eye masks and scrunchies
19.HCN.84688
Product Class I · via our silk house
| Issuing institute | Hohenstein (Hohenstein Laboratories, Germany) |
|---|---|
| License holder | Our silk house |
| Scope | Silk eye masks and scrunchies |
| Product class | Product Class I, the strictest OEKO-TEX product class, the one set for baby articles |
| Valid until | September 30, 2027 |
| Public verification | oeko-tex.com/en/label-check |
| Certificate | Download PDF |
How to verify
- Go to oeko-tex.com/en/label-check.
- Enter certificate number 22.HCN.30712 (silk pillowcases) or 19.HCN.84688 (eye masks and scrunchies) in the search field.
- Confirm that the issuing institute shows as Hohenstein and that the certificate is currently valid.
- If you cannot find the certificate on the public database, please email us at hello@winksilk.com and we will send the current PDF.
In application: Wink Silk LLC's own certifications
As of publication, Wink Silk LLC (the US brand) is in the application process for both its own GOTS Trader certification and its own brand-level OEKO-TEX Standard 100 certification. These will run in parallel with the fabric-level certifications above and give Wink Silk LLC the right to display the GOTS and OEKO-TEX marks on our own packaging, marketing, and labels under our own license numbers. The moment either certificate issues, this page updates and our license numbers appear here. The founder's rule is to publish nothing that cannot be checked, and that includes the timing of our own applications.
Frequently asked questions
Is Wink Silk actually GOTS certified?
Not yet in our own name, and we will never pretend otherwise. Every Wink Silk pillowcase, eye mask and hair tie is crafted by a GOTS & OEKO-TEX certified silk house (GOTS license 00284622, certification body ECOCERT Greenlife), and you can look that number up yourself. Wink Silk LLC's own GOTS Trader certification is in application; when it issues, we will publish our own license number here.
Is Wink Silk actually OEKO-TEX Standard 100 certified?
The products are certified at our silk house under two certificates issued by Hohenstein, both in Product Class I, the strictest OEKO-TEX product class: 22.HCN.30712 for silk pillowcases and 19.HCN.84688 for eye masks and scrunchies. Wink Silk LLC's own brand-level certificate is in application.
Why don't you just claim your manufacturer's certifications as your own?
Because that is not how these certifications work, and we will not misstate them. GOTS and OEKO-TEX certify facilities and license holders, not brands by association. The clean and honest phrasing is that our fabric is certified; when Wink Silk LLC itself is certified, we will say so, and the license numbers will appear on this page.
What is the difference between GOTS and OEKO-TEX Standard 100?
GOTS certifies the organic origin and the entire processing chain of the textile, from farm to finished fabric. OEKO-TEX Standard 100 tests the finished textile for harmful substances against strict Class I limits. GOTS answers "where did this come from and how was it made"; OEKO-TEX answers "what is in the final product." They are complementary and we insist on both.
Can I get the actual certificate PDFs?
Yes, they are linked in the tables above. If any download does not work or you need a current version, email hello@winksilk.com.
How often do these certificates renew?
Annually. We update this page within a week of each renewal.
Verify us. Verify everyone.
The reason we publish this page is not to prove Wink Silk is honest. It is to give you the tools to check any brand on the same standard, including us. If you are shopping silk elsewhere, ask the questions we answer here: license numbers, issuing body, current PDF, and where to look them up. A brand that cannot answer those questions is telling you what its certifications actually are.
If you would like to talk to us about any of this, or ask a question we have not answered, hello@winksilk.com goes straight to the founder's team. We reply within one to two business days.
Erin WiseFounder