A skincare ingredient list uses standardized INCI names, in descending order of amount, with ingredients at 1% or less allowed in any order after that. It tells you what is in a product and roughly what dominates. It doesn’t give exact percentages, and it can’t tell you how the product will work for you.
INCI: the naming system
INCI (International Nomenclature of Cosmetic Ingredients) gives each ingredient one standardized name, so the same ingredient reads the same way on every label. Chemicals keep their technical names (Glycerin, Niacinamide). Plants use Latin names, often with the common name in brackets and the part used (Aloe Barbadensis Leaf Juice). Water is usually listed as Aqua or Water.
What the order tells you
Under US labeling rules, ingredients above 1% are listed in descending order of amount. So the first few ingredients usually make up most of the product. Water first means a water-based formula.
What the order doesn’t tell you
- Exact percentages. Fifth place doesn’t mean 5%.
- The 1% line. Ingredients at 1% or less can appear in any order, and the label doesn’t show where that group starts.
- How effective an ingredient is at its level.
- Grade, source or quality of an ingredient.
Many useful ingredients work at low levels, and preservatives and extracts often sit near the end. Position isn’t a ranking of importance. What a percentage tells you.
How to find what matters to you
- Search for things you avoid: specific plants, lanolin, particular preservatives, or ingredients you have reacted to before.
- Look for fragrance: “fragrance,” “parfum,” and essential oils. What fragrance-free means.
- Find the key ingredient by exact name, not by the front-label category. Why exact names matter.
- Check for alcohol, and which kind. Alcohol or Alcohol Denat. is ethanol. Cetyl, stearyl and cetearyl alcohol are fatty alcohols used for texture.
- Note the preservatives. Water-based products need them to stay safe after opening.
Ingredient groups worth recognizing
- Humectants hold water: glycerin, butylene glycol, propanediol, sodium hyaluronate, panthenol.
- Emollients soften: caprylic/capric triglyceride, plant oils, esters.
- Emulsifiers hold oil and water together: cetearyl olivate, cetearyl glucoside.
- Thickeners: xanthan gum, acacia gum, acrylate polymers.
- Preservatives: phenoxyethanol, sodium benzoate, potassium sorbate.
- pH adjusters: citric acid, sodium citrate.
A worked example
Our 001 Copper Peptide Cream list starts Aqua, Sorbitan Olivate, Cetearyl Olivate, Caprylic/Capric Triglyceride… That tells you it is a water-based cream held together by olive-derived emulsifiers, with a light emollient. Further down you’ll find the copper ingredient, Copper Lysinate/Prolinate, plant extracts, glycerin and aloe, and at the end the preservatives. The full list, explained line by line.
If a product hides its list
A product page that only lists “key ingredients,” or shows the list only in a blurry box photo, makes this harder. Ask the brand for the full INCI before you buy.
Further reading: FDA: Cosmetics labeling guide · FDA: Allergens in cosmetics
On every Ozera product page, open Full ingredient list to see the complete list, alongside directions and the manufacturer’s formulation attributes. All four are together on the Ingredients page.
Photography: Annie Spratt / Unsplash. Editorial photograph.