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Skin Glossary

Skin Academy · Resource

Essential skin and cosmetic terms, simply defined and jargon-free — each linked to the chapter that elaborates on it.

Hyaluronic Acid · learn more →
A humectant capable of retaining water, used for plumping appearance and comfort.
Antioxidant · learn more →
An ingredient that helps protect the skin's appearance from the visible effects of environmental oxidative stress.
Skin Barrier · learn more →
The outermost layer of the epidermis that helps preserve hydration and protect against external aggressions.
Dehydration · learn more →
Lack of surface water, a temporary condition that can affect all skin types.
An ingredient that softens and smooths the skin's appearance by filling the space between surface cells.
Skin Condition · learn more →
A temporary state of the skin (dehydrated, sensitized, dull) linked to context and habits.
Exfoliation · learn more →
An action aimed at promoting the elimination of dead surface cells for a smoother skin texture.
Hydrolipidic Film · learn more →
A thin emulsion of water and lipids on the skin's surface, which contributes to its comfort and protection.
An ingredient that attracts and helps retain water in the superficial layers (e.g. glycerin, hyaluronic acid).
International Nomenclature of Cosmetic Ingredients, a standardized list of cosmetic ingredients, readable on every label.
Skin Microbiome · learn more →
All microorganisms living on the skin's surface, part of an ecosystem to be respected.
Niacinamide · learn more →
A form of vitamin B3 prized for skin comfort and even appearance.
NMF (Natural Moisturizing Factors) · learn more →
Molecules present in the stratum corneum that help retain water and preserve suppleness.
An ingredient that forms a film limiting water evaporation, for a prolonged comfort effect.
Provitamin B5 known for its soothing and comforting skin sensation.
A measure of the skin's surface acidity; an balance that gentle skincare aims not to disturb.
Cell Renewal · learn more →
The natural process by which the skin gradually replaces its surface cells.
A lipid substance produced by the skin, which contributes to the protective film; its quantity varies according to skin profiles.
Sun Protection Factor of a product, a benchmark for daily protection of skin appearance.
The underlying nature of the skin (dry, oily, combination, normal), relatively stable over time.
And YOUR skin?

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The NOPAL LIFE Skin Academy offers informative and educational content. It does not replace medical advice, diagnosis, or a dermatological consultation. In case of persistent skin problems, significant reactions, or doubt, consult a qualified health professional.

© NOPAL LIFE — Skin Academy. All rights reserved. Any reproduction, adaptation, translation, extraction, or reuse, even partial, is prohibited without prior written authorization.

Key concepts

Cosmetic vocabulary: key benchmarks

Understanding cosmetic vocabulary helps you choose your skincare wisely rather than randomly. This page brings together the essentials — skin, water, product, body — to connect these notions to your actual skin, in a cosmetic, educational, and non-medical approach.

Express glossary

Skin
The largest organ of the body and the primary interface with the outside; its surface, the epidermis, plays a visible role in protection and comfort.
Product
A cosmetic item (cleanser, serum, cream, etc.); its quality depends on its overall formula and tolerance, not just one active ingredient.
Epidermis
The upper layer of the skin, in contact with the air; it houses the skin barrier which helps preserve surface hydration.
Cosmetics
Products intended for the body's surface (skin, hair, nails); they maintain appearance and comfort, without medical claims.
Skincare
Products or actions intended to maintain the skin's appearance and comfort: cleansing, moisturizing, protection.
Cream
A foundational skincare product that moisturizes and protects the surface; it seals in the previous steps of the routine.
Cells
The basic building blocks of the skin; in the stratum corneum, they assemble with lipids like bricks and mortar.
Face
The most exposed and thinnest skin area; it benefits from gentle care and daily sun protection.
Sebum
A lipid substance naturally produced by the skin; it contributes to the surface film and comfort, and its appearance varies from one skin to another.
Hydrolipidic film
A thin emulsion of water and lipids on the skin's surface; this film contributes to suppleness and comfort and limits the sensation of tightness.
Hyaluronic acid
A humectant capable of retaining a large amount of water; in cosmetics, it helps the skin feel plump and comfortable on the surface.
Skin aging
The natural evolution of skin over time — wrinkles, loss of firmness and radiance. Skincare helps to manage its appearance, without stopping it.
Scalp
The skin on the head; like the face, it benefits from gentle care that respects its comfort and balance.
Moisturizing cream
A skincare product that combines humectants, emollients, and sometimes occlusives to help the skin remain supple and comfortable.

Also discussed

This chapter also sheds light on: water · body · powder · surface · acid.

Key takeaways

  • Start with your real skin: observe its texture and comfort before using too many products.
  • A simple and regular routine, adapted to your profile, is better than an accumulation of treatments.
  • Read formulas and promises with discernment: this content gives you benchmarks, not prescriptions.

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

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Connect what you've learned to your actual skin with the NOPAL LIFE diagnostic.

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