List of ingredients or INCI for short (International nomenclature (of) cosmetics ingredients) is any substance or mixture of substances purposefully used to produce cosmetic products during the manufacturing process (EC No. 1223/2009). The ingredient list is used in many countries around the world, such as the United States of America, the European Union, Japan, China, etc. With some exceptions, the INCI is the same in all countries. There are currently 16,000 different chemicals on the ingredients list.

After creating a cosmetic product, it is necessary to create a list of its ingredients. Regulation (EC) of the European Parliament and Council No. 1223/2009, "the list of ingredients is drawn up in descending order of mass as they were in the manufacture of the cosmetic product", but those whose concentration in the product is less than 1% can be listed in any order after those whose concentration exceeds 1%.

The term "parfum" or "aroma" found in the list of ingredients indicates the raw materials used in the fragrance and aromatic compositions of the product. The European Union has identified 26 chemical substances that are considered potential allergens and are often included in the composition of fragrances. If the limits set by the European Union are exceeded, these chemicals (allergens) must be indicated in the list of ingredients of the product.

When launching the product on the market, the manufacturer undertakes to comply with the above-mentioned rules: to compile the list of ingredients of the cosmetic product only according to the International Nomenclature of Cosmetic Ingredients, without changing the name of the chemical substance with other existing nomenclature (e.g. IUPAC) and to specify all chemical compounds in the product according to their concentration.

Reference to the European Parliament and Council Regulation (EC) No. 1223/2009:
https://eur-lex.europa.eu/legal-content/LT/TXT/PDF/?uri=CELEX:32009R1223&from=LT