INCI is the standardized naming system for cosmetic ingredients. Here's how to read an ingredient list, decode the names, and build a label-ready INCI declaration for your indie beauty brand.
Published August 25, 2026 · By Formulate 360 Team· Topics: inci lookup, what does inci mean, inci ingredient list, how to read ingredient list
INCI stands for International Nomenclature of Cosmetic Ingredients. It is the standardized system for naming the ingredients that go into cosmetics and personal care products. When you see a list of scientific-sounding names on a lotion bottle — Aqua, Glycerin, Cetearyl Alcohol — that's the INCI declaration. CONFIRMED standard cosmetic labeling terminology; see FDA cosmetics labeling guidance.
The point of INCI is that the same ingredient gets the same name everywhere, so a formulator in Ohio and a contract manufacturer in California are talking about the same thing. Trade names like “Emulsifier Magic 2000” do not appear on labels. The INCI name does.
For an indie brand, INCI matters for three reasons:
Ingredients are listed from highest concentration to lowest — the ingredient present in the largest amount comes first. CONFIRMED 21 CFR 701.3.
There is one exception: ingredients present at 1% or less can be listed in any orderafter the higher-concentration ingredients. That's why you see the “≤1%” block at the end of many labels, where the order looks arbitrary. It's allowed to be. CONFIRMED 21 CFR 701.3.
INCI names mix Latin, English, and botanical terms. A few patterns help you read them:
DIRECTIONAL — typical INCI name patterns; the specific examples are common commercial ingredients.
Here's a representative serum formula from cosmetic-ingredient supplier literature, with INCI names and typical percentages by weight:
DIRECTIONAL — example formula from supplier formulation literature, 2026; percentages are typical starting points, not a recipe. Verify every formula with a qualified formulator before production.
On a label, this list would appear in descending order, so it reads: Aqua, Niacinamide, Propanediol, Glycerin, Betaine, Panthenol, Phenoxyethanol (and) Ethylhexylglycerin, Hydroxyethylcellulose — with the ≤1% items (Betaine, Panthenol, the preservative, the thickener) free to reorder among themselves.
Two things to notice:
A cosmetic label is more than ingredients. The basics a US label should carry CONFIRMED 21 CFR Parts 701 and 740; FD&C Act § 602(b):
What does "q.s. to 100" mean?
"Quantum satis" — the water phase is adjusted to bring the total to 100%. It's how formulas stay percentage-correct when actives and additives are measured first.
Does the order on a label tell me the exact percentage?
No. It tells you the ranking, not the number. Only the ≤1% cutoff is legally informative.
Can I just copy ingredient names from another brand's label?
No. Your label must reflect your actual formula. Copying a competitor's list is both legally risky and useless — their percentages aren't yours.
Where do I look up an INCI name?
Free databases like INCIDecoder and INCIkit let you search by trade name or INCI name.
Reading an INCI list is a skill, not a secret. Learn to read your own label the way a contract manufacturer will read it, and half of the “professional” gap between kitchen batch and commercial disappears. The other half is documentation — SOPs, specs, safety records — which is where a formulation workspace earns its keep.
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