Ingredients Academy

Cosmetic ingredients: key benchmarks

Behind every skincare product lies a list of ingredients — the INCI list (International Nomenclature of Cosmetic Ingredients), a common language that names each component. Learning to read it means gaining autonomy: the first names are the most abundant, and you can quickly identify water, vegetable oils, hydrating agents, or shea butter.

Cosmetic ingredients fall into broad categories based on their role: humectants that attract water, emollients that soften, occlusives that limit evaporation, antioxidants, cleansing agents, preservatives that ensure product stability, and fragrances. Natural or synthetic is not a guarantee of quality in itself: it is the formula as a whole, and its tolerance, that matter.

A few pointers for decoding a label: active and functional substances (hydrating agents, cleansing agents) are found alongside water, vegetable oils, emulsifiers, and preservatives. The same ingredient can have a Latin name, indicating a plant origin, or an English name; some, like mica, simply give the texture a pearlescent finish. Reading the INCI nomenclature means recognizing these families rather than relying solely on the packaging.

Reading a formula with discernment helps you choose products suitable for your skin and question marketing promises. The Academy dedicates an entire module to ingredients — from star active ingredients to vegetable oils — so that every purchase becomes an informed choice, and not a reaction to an enticing label.

On the program

This module consists of the following chapters:

• How to read an INCI list
• Introduction to modern cosmetology
• Niacinamide
• Rosehip
• Vitamin C
• Jojoba
• Panthenol
• Antioxidants
• Emollients
• Humectants
• Occlusives
• Hyaluronic acid
• Aloe vera
• Argan
• Oat
• Prickly pear seed oil

Quick glossary

Cosmetics

Products intended for the body's surface (skin, hair, nails); they maintain appearance and comfort, without medical claims.

Agents

Components of a formula classified by function (hydrating agents, cleansing agents, preservatives…) that define the role of each ingredient.

INCI

International Nomenclature of Cosmetic Ingredients, which names each component of a product; reading the INCI list helps in making informed choices.

Synthetic

Refers to an ingredient produced by synthesis rather than extracted from a plant; neither a guarantee nor a defect of quality in itself, it is the overall formula that matters.

Skin

The largest organ of the body and the primary interface with the outside world; its surface, the epidermis, plays a visible role in protection and comfort.

Fragrances

An ingredient (often listed as "fragrance") that gives the product its scent; sensitive skin sometimes prefers fragrance-free formulas.

Fragrance

INCI term for a product's scent; reactive skin types monitor its presence to limit sources of discomfort.

INCI list

Regulatory list of ingredients in a cosmetic product, in descending order of presence; a valuable guide for comparing two products.

Concepts also covered

This chapter also sheds light on: products · ingredients.

Key takeaways

• Start with your actual skin: observe its products and comfort before multiplying products.
• A simple, regular routine, adapted to your profile, is better than an accumulation of treatments.
• Read formulas and promises with discernment: this content provides guidance, not prescriptions.

Educational cosmetic content for informational purposes only. It does not replace dermatological advice.