INCI (International Nomenclature of Cosmetic Ingredients) is the system that lets a cosmetic ingredient be called the same thing in every country and language. It is the name a brand relies on to source raw materials and to print a full-ingredient list. A material can carry many different supplier trade names, but its INCI name is one — which is exactly what makes it useful for sourcing.
Why INCI exists
On the raw-material market, the same ingredient circulates under different trade names from different suppliers. When you specify the material by its INCI name, you can tell precisely which supplier's product is the same ingredient as another's. For a sourcing team, INCI is the common language that lets you compare like with like instead of comparing marketing names.
| Type | Description | Example |
|---|---|---|
| INCI name | International standard name (fixed to one) | Glycerin |
| Trade name | Supplier's product name (many) | Varies by supplier |
| Label name | Name used on the market's ingredient list | Glycerin |
How ingredient lists are ordered
A full-ingredient list is, as a rule, ordered by concentration, highest first. Ingredients below a certain threshold may be listed in any order, and colorants and fragrance follow their own rules. If you lock the concentrations down during sourcing, the labeling and registration that follow become far smoother.
- List ingredients from the highest concentration downward
- Trace-level ingredients may be exempt from strict order
- Check the separate rules for colorants and fragrance
Same INCI, different grade and spec
The important caveat is that the same INCI name can still cover materials of different grade and specification. The same hyaluronic acid can vary in molecular weight, purity, origin and process, which changes both feel and price. INCI tells you *what* a material is, not *how good* it is — so shortlist by INCI, then compare the real quality with a Certificate of Analysis.
- Molecular weight / particle size — alters sensory feel and function
- Purity and impurity limits — directly affect stability and safety
- Origin and manufacturing process — affect supply and documentation
Using INCI in day-to-day sourcing
In practice, start every sourcing request from the INCI name, collect offers against it, and only then layer on grade, specification, quantity and destination market. This keeps your shortlist honest and your quotes comparable — and it is the fastest route from 'I need this ingredient' to a decision you can defend.
Source & method: adapted from MaterialB's Korean ingredient-education material and public INCI references for English readers. This is general guidance, not a product claim.