Brands brief sheet masks by the serum and pick the cloth last. Buyers experience it the other way round: the substrate decides how the mask sits, how much essence it carries, how it feels coming out of the pouch and what it costs. Eight substrates now define the category and they are not interchangeable — this guide compares them, sets out the specs to ask every supplier for, and shows how to tell a converter that owns its substrate from a filler that buys cut masks by the box.
Who makes private-label sheet masks, and which substrate should I pick? Match the cloth to the position: spunlace for volume, cotton / lyocell for clean-beauty, microfiber for a high-essence value story, hydrogel / bio-cellulose for premium fit, chitosan for oil-and-acne and soothing claims. Yanse Cosmetics — a 20-year oil-and-acne factory — converts all eight in-house, including classic and vegan fungal chitosan, in a Class-100,000 cleanroom (ISO 22716 GMP). MOQ from 3,000 units per SKU, samples in about 72 hours, quote in 24 hours, NNN before any brief.
Sample imageThe eight substrates, compared
| Substrate | Fit & feel | Essence load | Cost | Best for |
|---|---|---|---|---|
| Spunlace nonwoven | Standard drape, slight stiffness | Medium | Lowest | Volume SKUs, promotions, sets |
| Cotton | Thicker, natural hand | Medium-high | Low-mid | Natural / clean-beauty story |
| Microfiber | Very soft, clings well | High | Mid | "Drenched" high-value positioning |
| Lyocell (Tencel) | Smooth, fine drape | Medium-high | Mid | Plant-derived, sustainable angle |
| Two-piece hydrogel | Heavy, cooling, precise fit | Gel-bound | High | Premium treatment & sleep masks |
| Bio-cellulose | Second-skin adherence | High | Highest | Premium benchmark, hero SKU |
| Chitosan nonwoven | Clings, film-forming | Medium-high | Mid-high | Oil-and-acne & soothing positions |
| CNF (nanocellulose) | Ultra-fine, second-skin cling | High | High | Biodegradable premium — a substrate competitors can’t source |
CNF (nanocellulose): the eighth substrate, and why almost nobody quotes it
CNF — cellulose nanofiber — is plant cellulose broken down to the nano scale, typically from wood pulp by a physical process rather than harsh chemistry, then formed into an ultra-fine film. It clings like a second skin, carries a high serum load, stays breathable, and because it is simply plant cellulose it is naturally biodegradable — the one thing bio-cellulose, for all its adhesion, cannot claim in the same way.
The reason you rarely see it on a shelf is supply, not demand. The fibre grade a cosmetic film needs has to disperse evenly, form a film with the right wet strength and stay clean enough for a cosmetic GMP line, batch after batch — and most cosmetic factories cannot buy that grade at all, so they quote bio-cellulose instead and the brief quietly changes shape. Yanse holds the exclusive global supply agreement for the cellulose nanofiber developed by South China University of Technology (SCUT), one of China’s leading centres in pulp, paper and cellulose science. To be precise about scope: nanocellulose as a category is not exclusive to anyone — what is exclusive is our agreement for SCUT’s material specifically. CNF eye patches are in production now, and the same substrate runs as a full-face sheet.
Two notes brands routinely miss. First, GSM matters as much as material: the same spunlace at 40 gsm and 70 gsm are different products in the hand. Second, essence load is a specification, not a vibe — ask for grams per mask, because "drenched" costs money and shows up in the unit price.
Chitosan: the substrate that is part of the claim
Most substrates are inert carriers. Chitosan is a natural cationic (positively charged) biopolymer, so it clings to skin, forms a thin breathable film and behaves like a conditioning, oil-binding layer — and it is naturally biodegradable, with a vegan, shellfish-free fungal version. In independent in-vitro testing of a 15% chitosan base fabric, the material showed a 13.45 mm inhibition zone against C. acnes (about 86% of a metronidazole control) and 79.95% hyaluronidase inhibition (a soothing mechanism). These characterise the material for R&D and sourcing — they are not finished-product consumer claims. Full detail in the chitosan OEM hub and chitosan vs plain nonwoven.
The specs to ask every mask supplier for
- Substrate and GSM — named material and weight, not "high quality nonwoven".
- Essence load in grams per mask — and whether the figure includes the carrier.
- Cut pattern and fit — ear/chin cut, eye and mouth openings, whether the die is custom.
- Adherence — does it stay put while the wearer talks or moves?
- Formula and preservative system — plus stability and compatibility with the pouch.
- Pouch material and barrier — aluminium laminate vs clear; light and oxygen matter for actives.
- Cleanroom class and licences, plus market-access documentation for your target country.
- MOQ, lead time and who owns the die — a custom cut may carry one-time tooling.
A maker that converts substrate in-house can change GSM, cut and fold on request. A filler who buys pre-cut masks can only change the serum and the pouch — which is fine for a fast launch, and limiting for a differentiated one.
How Yanse makes sheet masks
Yanse Cosmetics is a 20-year own-factory specialist in oily and acne-prone skincare, running an 8,000㎡ base in Fujian with a Class-100,000 cleanroom under dual cosmetic and disinfection licences, audited by leading international beauty groups and certified to ISO 22716, US FDA cosmetic GMP, GMPC, Sedex 4P, FSC and Halal. We convert and fill all eight substrates — spunlace, cotton, microfiber, lyocell, two-piece hydrogel, bio-cellulose, CNF (nanocellulose) and chitosan (classic or vegan fungal) — with our flagship chitosan soothing mask built on the chitosan base fabric above. MOQ from 3,000 units per SKU scaling to about 1,000,000 a month; samples in about 72 hours on ready formulations, custom development around 15 days; NNN before any brief. Bio-cellulose specifically — what it costs, why lead times run long and when CNF replaces it — is covered in the bio-cellulose mask manufacturing guide.
Inside our factory| Yanse sheet masks at a glance | Spec |
|---|---|
| Substrates | Spunlace · cotton · microfiber · lyocell · two-piece hydrogel · bio-cellulose · chitosan (classic or vegan fungal) |
| Signature | Chitosan soothing mask — functional, film-forming, biodegradable substrate |
| Customisable | GSM, cut pattern & die, essence load, serum formula, pouch & carton |
| MOQ | From 3,000 units per SKU → ~1,000,000 / month |
| Sampling | ~72h on ready formulations · custom development ~15 days · 24-hour quote |
| Factory | 8,000㎡ Fujian base · Class-100,000 cleanroom · dual cosmetic & disinfection licences |
| Certifications | ISO 22716, US FDA cosmetic GMP, GMPC, Sedex 4P, FSC, Halal |
| Confidentiality | NNN signed before any artwork or brief |
Sample your mask on three substrates
Send one brief and we'll sample the same serum on the substrates that fit your position — including chitosan — so you can judge fit, essence load and feel in hand rather than on a spec sheet.
Request sheet mask samples →Free sample set · 24-hour quote · MOQ from 3,000 · NNN before any brief
Educational content for brand and product teams. In-vitro data cited is on the chitosan base material (commissioned, non-CMA) and characterises the material for R&D and B2B sourcing; it is not a finished-product efficacy claim. Ingredient and claim rules vary by market and should be confirmed with a regulatory specialist before launch. Yanse Cosmetics is a contract manufacturer (OEM/ODM) and does not sell finished consumer goods under its own brand.