How to Read an INCI Label — A Complete Guide
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Every skincare product sold in Europe is required by law to list its ingredients in a specific format — the INCI list. INCI stands for International Nomenclature of Cosmetic Ingredients, a standardised system that assigns a universal name to every cosmetic ingredient regardless of which country or language the product is sold in.
Most people ignore the INCI list entirely, or glance at it and feel immediately lost. That's understandable — "Butyrospermum Parkii Butter" is not immediately obvious as shea butter, and "Tocopherol" doesn't announce itself as vitamin E. But learning to read an INCI list is one of the most practical skills you can develop as a skincare consumer. Once you understand the system, you can evaluate any product — not just the ones with good marketing.
Here's how it works.
The Most Important Rule: Order Means Concentration
Ingredients in an INCI list are required to be listed in descending order of concentration — from the ingredient present in the highest amount to the ingredient present in the lowest amount. This single rule tells you more about a product than almost anything else on the packaging.
The first five ingredients typically make up the majority of a formula — often 80–95% of the total product by weight. What appears in positions one through five is what the product fundamentally is. Everything listed further down contributes less and less to the formula, until the final ingredients — often present at fractions of a percent — contribute mainly technical function (stabilisers, preservatives) or marketing appeal.
This is why the order matters so much when evaluating claims. A product marketed around rosehip oil that lists rosehip oil fifteenth in a long ingredient list contains very little rosehip oil — regardless of what the front of the packaging says.
The 1% Threshold
There is one important exception to the concentration rule: ingredients present at 1% or less can be listed in any order after the threshold. This means that once you reach the point in a list where concentrations drop below 1%, the ordering becomes arbitrary — a brand can list their high-value actives prominently even if they're present in negligible amounts, as long as all of them are below 1%.
This is a common technique in skincare formulation and marketing. An ingredient that appears two-thirds of the way down a long list is almost certainly present at less than 1% concentration — it's there to appear on the label, not to meaningfully affect the formula. This doesn't make the product dishonest by itself, but it does mean the presence of an ingredient on the label is not the same as that ingredient being present in an effective amount.
Water Always Comes First
The first ingredient in most skincare formulas is water — listed as "Aqua" in the INCI system. Water is the base of most emulsions (creams and lotions), serums, and gels, and it's almost always the dominant ingredient by weight. A moisturiser that is 70% water is perfectly normal and functional — water is not a filler in any negative sense, it's an essential carrier for the active ingredients that follow.
What matters is what comes after the water. The next several ingredients tell you the character of the formula — whether it's primarily oil-based or water-based, which emollients and humectants anchor the product, and how much of the formula is genuinely functional versus structural.
Recognising Ingredient Categories
You don't need to memorise every INCI name to read a label effectively. Learning to recognise ingredient categories is enough to evaluate most products.
Humectants — attract and hold moisture
These ingredients draw water into the skin and hold it there. Look for: Glycerin (one of the most effective and common humectants), Sodium Hyaluronate and Hyaluronic Acid (the INCI names for hyaluronic acid in different molecular weights), Panthenol (provitamin B5), and Sodium PCA.
Emollients — soften and smooth
These fill the gaps between skin cells and create a smooth, soft texture. Look for: plant oils (ending in "Oil" — Jojoba Seed Oil, Rosehip Seed Oil, Argan Oil), plant butters (Butyrospermum Parkii is shea butter, Theobroma Cacao Seed Butter is cocoa butter), and esters like Caprylic/Capric Triglyceride.
Occlusives — seal in moisture
These create a physical barrier that reduces water loss. Plant-based occlusives include Hydrogenated Coco-Glycerides and plant waxes. Conventional occlusives include petrolatum, mineral oil (Paraffinum Liquidum), and dimethicone — the last two being synthetic petrochemicals excluded from ECOCERT and COSMOS certified formulas.
Actives — the ingredients that do targeted work
Actives are the ingredients that address specific concerns. Common ones include Ascorbic Acid or Ascorbyl Glucoside (vitamin C), Niacinamide (vitamin B3), Retinol (vitamin A — and its derivatives), Tocopherol (vitamin E), and peptides (often named with "Palmitoyl" or "Acetyl" prefixes). Actives are often present in relatively small amounts — their effect comes from their mechanism of action, not their concentration.
Preservatives — keep the product stable
All water-containing skincare products require preservation to prevent microbial growth. Natural-origin preservatives include Phenoxyethanol (borderline — permitted in small concentrations in some certified formulas), Benzyl Alcohol, and Sodium Benzoate. Synthetic preservatives to be aware of in conventional products include Parabens (methylparaben, propylparaben, butylparaben) and formaldehyde-releasing preservatives like DMDM Hydantoin.
Fragrance — the disclosure problem
"Parfum" or "Fragrance" on an INCI list represents a blend of aromatic compounds that brands are not required to disclose individually. This single word can cover dozens of different chemical components — including known sensitisers. For sensitive skin, this opacity is the core problem with fragrance in skincare: you cannot evaluate what you're applying because the components are hidden behind a single term.
Natural fragrance from essential oils must be listed individually by INCI name — so "Lavandula Angustifolia Oil" (lavender) or "Citrus Aurantium Bergamia Fruit Oil" (bergamot) are disclosed. Certain components of natural fragrance that are common allergens — limonene, linalool, geraniol, citronellol — are required to be listed separately when present above threshold concentrations.
Identifying Synthetic Petrochemicals
For anyone evaluating whether a product is genuinely natural, recognising synthetic petrochemical ingredients is essential. These are the categories that ECOCERT and COSMOS certification explicitly prohibits:
Silicones — ingredient names ending in "-cone" or "-siloxane": Dimethicone, Cyclomethicone, Cyclopentasiloxane, Amodimethicone. They create smooth textures and slip but are synthetic petrochemicals.
PEG compounds — ingredient names containing "PEG-" followed by a number: PEG-40 Hydrogenated Castor Oil, PEG-100 Stearate. Used as emulsifiers and texture agents, derived from petroleum.
Mineral oil and paraffin — listed as Paraffinum Liquidum, Petrolatum, Mineral Oil, Ceresin. Effective occlusives derived from petroleum refining.
Synthetic polymers — Carbomer, Acrylates Copolymer, and related names. Used as thickeners and stabilisers.
The presence of these ingredients doesn't necessarily make a product harmful, but it does confirm the product is not genuinely natural regardless of marketing claims. For a complete guide to identifying greenwashing based on ingredient lists, see our guide to spotting greenwashing in natural skincare.
Decoding Common INCI Names
Some of the most common INCI names are not immediately recognisable from their common names. Here are the ones worth knowing:
Aqua — water. Always first in water-based formulas.
Glycerin — glycerol, a humectant. Almost universally present in moisturisers.
Butyrospermum Parkii Butter — shea butter.
Simmondsia Chinensis Seed Oil — jojoba oil.
Rosa Canina Fruit Oil — rosehip oil.
Tocopherol — vitamin E. A natural antioxidant and preservative booster.
Panthenol — provitamin B5. A humectant and skin soother.
Sodium Hyaluronate — the sodium salt of hyaluronic acid. Penetrates more easily than high molecular weight hyaluronic acid.
Xanthan Gum — a natural thickener derived from fermentation.
Citric Acid — used to adjust pH. Naturally derived from citrus.
Caprylic/Capric Triglyceride — a lightweight emollient derived from coconut oil or palm kernel oil.
A Practical Checklist for Evaluating an INCI List
- What are the first five ingredients? This tells you what the product fundamentally is.
- Where does the hero ingredient appear? If it's in the bottom third of a long list, it's present in trace amounts.
- Is "Parfum" or "Fragrance" present? If so, the full fragrance composition is undisclosed.
- Are synthetic petrochemicals present — silicones, PEGs, mineral oil? If yes, the product is not genuinely natural.
- What preservatives are used? Natural-origin formulas use different preservation systems than conventional ones.
- Does the product carry a third-party certification — ECOCERT, COSMOS, NATRUE? Certification means an independent body has verified the entire ingredient list meets documented standards.
Running through these six questions takes about two minutes per product and gives you a far more accurate picture of what you're buying than any claim on the front of the packaging.
FrostBloom and Ingredient Transparency
Every product in the FrostBloom range lists its complete INCI ingredient list on the product page — no proprietary blends, no hidden components. All formulas are certified by ECOCERT to either COSMOS NATURAL or COSMOS ORGANIC standard, meaning the entire ingredient list has been independently verified to meet strict natural-origin and organic content requirements.
Understanding the INCI list is also how you verify our certification claims rather than simply taking them at face value. You can cross-reference our ingredient lists with ECOCERT's public database at ecocert.com to confirm our products appear as certified. That transparency is the point of certification — and the point of knowing how to read a label.
For more on what ECOCERT and COSMOS certification actually guarantees, see our complete ECOCERT guide and our COSMOS NATURAL certification guide.
The Bottom Line
Reading an INCI list is a learnable skill, not a specialist one. The core rules are simple: ingredients are listed in order of concentration, the first five dominate the formula, and anything below the 1% threshold can appear in any order. Learning to recognise ingredient categories — humectants, emollients, actives, preservatives, synthetics — gives you the tools to evaluate any product independently.
The label is where the truth lives. The front of the packaging is where the marketing lives. Learning to read between the two is the single most useful thing you can do as an informed skincare consumer.
Put it into practice. Every FrostBloom product lists its complete INCI ingredient list on the product page — no proprietary blends, no hidden components. All formulas are independently verified by ECOCERT to COSMOS NATURAL or COSMOS ORGANIC standard.
Frequently Asked Questions
What does INCI stand for?
INCI stands for International Nomenclature of Cosmetic Ingredients — a standardised system for naming cosmetic ingredients that is used across Europe, the US, and most international markets. It assigns a universal Latin or scientific name to each ingredient so that the same ingredient is identifiable on a label regardless of language or country of sale.
Why are ingredients listed in Latin on skincare labels?
The INCI system uses Latin botanical names for plant-derived ingredients and chemical names for synthetic ingredients to create a universal standard that works across languages. "Simmondsia Chinensis Seed Oil" is the INCI name for jojoba oil in every country — it means the same thing on a French label, a Swedish label, and a Japanese label.
How do I know if an ingredient is present in an effective amount?
Position in the list is the main indicator. Ingredients in the top five are present in significant amounts. Ingredients appearing after the preservatives or fragrance are typically present at less than 1% — which may or may not be an effective concentration depending on the ingredient. Some actives like retinol are effective at very low concentrations; others like vitamin C require higher concentrations to produce results.
What does "Aqua" mean on an ingredient list?
Aqua is the INCI name for water. It appears first on most skincare products because water is the dominant ingredient in most emulsion-based formulas. This is normal and expected — water is not a filler in any problematic sense; it's the base in which all other ingredients are delivered to the skin.
How can I tell if a product is truly natural from the INCI list?
Look for the absence of synthetic petrochemicals — silicones (names ending in "-cone"), PEG compounds, mineral oil (Paraffinum Liquidum), and synthetic polymers. Look for the presence of plant-derived ingredients — botanical oils, plant extracts, naturally derived humectants. And look for a third-party certification logo — ECOCERT, COSMOS, or NATRUE — which means an independent body has verified the full ingredient list meets documented natural standards.
Is "fragrance" or "parfum" always bad?
Not always, but it represents an opacity worth being aware of. The word covers an undisclosed blend of aromatic compounds — some entirely harmless, some associated with sensitivity reactions. For sensitive or reactive skin, fragrance-free products remove this unknown variable entirely. For skin that isn't particularly reactive, moderate fragrance in a well-formulated product is unlikely to cause issues — but you can't evaluate what you don't know is there.