Private Label Seaweed Serum
The ocean's humectant garden — algae hydration with mineral depth.
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.
Which fluid route fits which active
Two fluids can look identical in the bottle and behave completely differently by the end of the shelf life.
| Route | Barrier it needs | Where it fits |
|---|---|---|
| Structured gel | Chelator with no oil phase to protect | Treatment and gel-adjacent formats |
| Buffer-controlled fluid | Standard pack, tight pH control | Actives that only work in a narrow pH window |
| Preservative-light fluid | Airless or single-dose pack | Markets where the preservative profile is restricted |
| Simple aqueous | Chelator plus an opaque or UV-filtered pack | Stable actives in high-volume lines |
The functional system in this base
INCI names and typical levels reflect publicly documented formulation practice. All values are adjustable in your build.
| Ingredient (INCI) | Typical Level | Function & Benefit |
|---|---|---|
| Laminaria (Kelp) Extract | 2–10% | Polysaccharide hydration |
| Undaria Pinnatifida (Wakame) Extract | 1–5% | Mineral nourishment |
| Chondrus Crispus (Carrageenan) | 0.5–2% | Bouncy gel structure |
| Sodium Hyaluronate | 0.1–0.3% | Multi-depth hydration |
Other fluid systems we manufacture
Private Label Hyaluronic Acid Serum
Multi-weight HA hydration serums that feel plumping, not sticky — the safest first SKU for any new brand.
Private Label Beta-Glucan Serum
The soother dermatology shelves reach for — yeast beta-glucan for sensitive-skin and post-procedure care.
Private Label Sheet Masks
The gifting and travel hero — substrate choice decides everything, and we stock all three tiers.
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.
Seaweed serum bottles the ocean's hydration chemistry: algae extracts (kelp, wakame, sea lettuce) carry polysaccharides and trace minerals that hold water with a signature bouncy gel feel. The marine story plays equally to clean beauty and to spa channels.
We blend two to three algae species for a broader mineral spectrum, keep the gel-essence light so it suits combination skin, and stabilize color naturally from the extracts — the pale sea-green tint is the product's own credential.
What gets decided before the preservative system
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.
Opaque is not a downgrade
Where an active is light-sensitive, an opaque or UV-filtered pack is part of the protection. Choosing clear glass for the look usually costs shelf life.
Viscosity without heaviness
Fluids are thickened with polymers that leave no residue, because the texture is meant to disappear on application.
Colour shift is the early warning
Long before an assay moves, a sensitive active usually shows a colour change. It is checked against the retained sample at release.
Where the compliance file comes from
The line is GMPC and ISO 22716 certified, and each batch carries raw-material-to-carton traceability under licence 粤妆20250206.
For a fluid the file is built on the preservation and stability studies run against the finished matrix, with the certificate of analysis, stability summary, microbiology report and MoCRA / CPNP-ready documentation attached to the order. Colour and clarity are read against the retained Golden Sample at release.
Stability and shelf-life questions
Does seaweed suit oily skin?
Yes — the gel texture is water-based and non-occlusive; oily skins actually prefer it to cream hydrators.
Is the green color added?
No — it comes from the extracts themselves and stays stable; adding dye would undercut the natural story.
Can this anchor a marine line?
Yes — mist, mask and cream extensions share the algae complex; spa bundles are a proven channel play.
Order quantities by pack size
Mixed-variant orders can split the stated MOQ across formats under one brand.
| Format / Specification | MOQ | Lead Time |
|---|---|---|
| Triple-algae gel essence, 50 ml | 1,000 pcs | 10–15 days |
| Seaweed + HA deep hydration build, 30 ml | 1,000 pcs | 10–15 days |
| Marine set (serum + mask + mist) | 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.
From brief to released fluid, step by step
- 1
Verify against the retained sample
Assay, pH and appearance are checked at release against the sample your buyer approved.
- 2
Set the pH window
The range is defined by the most sensitive active in the system, with a tolerance production can actually hold.
- 3
Verify dosage across the pack
Where the pack meters a dose, the delivered volume is checked across the life of the pack rather than only when it is full.
- 4
Dissolve in order of solubility
Ingredients go in by solubility rather than convenience, since the order affects both dissolution and how the system behaves afterwards.
Where this formula can be adjusted
- Single-origin vs. triple-algae blends
- Spa-channel liter sizes
- Natural sea-green color (no dyes)
- Vegan and ocean-safe positioning
Bring the claim and the climate
Where the product will be stored decides the barrier. Send the destination market and we quote against it within 24 hours.