Private Label Ferment Essence Serum
The first-essence ritual, bottled — ferment clarity that made a category famous.
Ferment essences built the K-beauty first-treatment category: yeast filtrates rich in amino acids, beta-glucan and organic acids that deliver the lit-from-within clarity customers photograph. The story sells itself on the ingredient list — but the texture decides repurchase.
We run a watery-light viscosity that pats in fast, keep pH slightly acidic for the ferment story, and offer both single-filtrate purity builds and multi-ferment complexes. Fragrance-free is the standard route for this SKU.
Formulas that sit beside this one
Private Label First Treatment Essence
Step zero of glass skin — the FTE that starts every Korean routine.
Private Label Rice Bran Serum
The heritage grain, reformulated — milky rice essence with modern brightening data.
Private Label Beta-Glucan Serum
The soother dermatology shelves reach for — yeast beta-glucan for sensitive-skin and post-procedure care.
Buyer guides for this build
Before you brief a supplier on this category, these are the guides that answer the questions buyers ask next — timelines, order quantities, cost structure and compliance.
What is adjustable on this fluid
- Single-filtrate 'XX% concentrate' front-of-pack story
- K-beauty minimal bottle with wide mouth for patting
- Fragrance-free / 100% ferment base options
- Cotton-pad regimen bundle inserts
Four levers on shelf life
Viscosity keeps building after fill
Polymer-thickened fluids can continue to develop structure for days after filling. Specification limits are written for the settled product, not for the freshly made one.
Compatibility between actives
Two actives that work alone can destabilise each other in the same bottle. Combinations are tested rather than assumed.
Both ends of the pack's life
An airless pack keeps the product away from air, but it also changes how the last few grams are dispensed. The end of the pack's life belongs in the design as much as the first.
Viscosity without heaviness
Fluids are thickened with polymers that leave no residue, because the texture is meant to disappear on application.
The active system and its working levels
INCI names and typical levels reflect publicly documented formulation practice. All values are adjustable in your build.
| Ingredient (INCI) | Typical Level | Function & Benefit |
|---|---|---|
| Galactomyces Ferment Filtrate | 70–95% | Clarity and texture refinement |
| Saccharomyces Ferment Filtrate | 5–15% | Amino acid nourishment |
| Beta-Glucan | 0.5–1% | Soothing hydration |
| Sodium Hyaluronate | 0.1–0.5% | Surface plumping |
Viscosity without weight is the whole craft of a fluid
A serum should feel like water and behave like a gel, and that combination is built with polymer choice and dosage rather than with more thickener. The two properties pull in opposite directions.
Push it one way and the product drips off the dropper; push it the other and it leaves a film on the skin. The sensory outcome of a fluid is decided in the rheology long before it is described on the pack.
Where each route fits a brief
The base is chosen around the least stable thing in the formula rather than around the headline ingredient.
| Route | Barrier it needs | Where it fits |
|---|---|---|
| Micellar system | Surfactant-stabilised, clear pack | Cleansing waters and no-rinse formats |
| Preservative-light fluid | Airless or single-dose pack | Markets where the preservative profile is restricted |
| Glycol-rich fluid | Modest barrier, higher water activity | Actives that need solubility more than protection |
| Structured gel | Chelator with no oil phase to protect | Treatment and gel-adjacent formats |
The paperwork that travels with a serum order
The lines are GMPC and ISO 22716 certified and operate in-house under licence 粤妆20250206, traceable from raw material through to carton.
Every production order ships with a certificate of analysis, a stability summary, a microbiology report and MoCRA / CPNP-ready documentation.
Because a fluid gives the actives nothing to hide behind, the retained Golden Sample is kept as the reference for colour and clarity, and the stability summary records how the system behaved across the destination market's temperature range.
From brief to released fluid, step by step
- 1
Dose the chelator against the water
The chelation level follows the incoming water and raw materials rather than a fixed line, because trace metals vary from source to source.
- 2
Fix the active system
Routes and levels are set against the claim, then checked for compatibility with each other before the base is built.
- 3
Build the buffer for capacity
The buffer system is chosen for how much acid or base it can absorb, not only for the pH it sets, so the window holds through storage.
- 4
Clarify by filtration
Filtration is matched to the viscosity so the product stays clear without stripping out what gives it body.
Questions we answer on every serum brief
What percentage claim is credible?
70–96% filtrate builds are the market norm; the number must match the COA, and we tie your label claim to the batch documentation.
Does ferment suit sensitive skin?
Generally yes — filtrates are gentle, though we keep fragrance out and run patch-test data for the sensitive positioning.
Essence vs. toner — what order?
After toner, before serum. Many brands market it as step one of the 'glass skin' routine with our toner pads as companion SKU.
Formats and order quantities
Mixed-variant orders can split the stated MOQ across formats under one brand.
| Format / Specification | MOQ | Lead Time |
|---|---|---|
| Galactomyces ferment filtrate 90%+ essence, 100 ml | 1,000 pcs | 10–15 days |
| Triple-ferment complex essence, 100 ml | 1,000 pcs | 10–15 days |
| Essence + cotton pad gift set | 1,000 sets | 10–15 days |
MOQ and lead time above are the standard liquid, cream and gel route. The real minimum is set by the manufacturing system rather than the category: surfactant systems (shampoo, body wash) start at 2,000 pcs, stick formats at 3,000, and powders and sheet masks at 5,000 — with longer production runs to match.
Send the pack you intend to use
Dropper, pump and airless formats protect a formula very differently. Tell us the pack and we quote the base that works inside it.