Beginner·Explainer·3 min
What is a cosmetic?
A cosmetic is a product applied to the body to clean, beautify, or alter appearance. That definition sets the boundary for what any cosmetic product can legitimately claim to do.
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The shortest path from zero knowledge to a working understanding of cosmetics.
Beginner·Guide·4 min
Understanding a skincare routine
A routine is a small, repeatable sequence: clean the skin, add water-binding ingredients, then reduce how quickly that water leaves. Everything else is optional.
RoutinesFoundation·Guide·6 min
How to read an ingredient list
Cosmetic ingredient lists use a standardised naming system and are ordered by concentration down to one percent. Knowing those two rules changes how much you can read from a label.
IngredientsFoundation·Explainer·4 min
What active ingredients actually mean
In regulatory terms an active ingredient belongs to specific product categories. In everyday cosmetic marketing the word is used loosely for whichever ingredient the product is built around.
IngredientsBeginner·Explainer·5 min
Serums, creams, oils, gels, and balms
The difference between a serum, a cream, an oil, a gel, and a balm is structural: how much water is present and how the formula holds itself together.
FormulationFoundation·Explainer·6 min
How cleansers work
Cleansers work because surfactants can hold both oil and water. That is also why cleansing always removes some of what the skin wants to keep.
SkinBeginner·Guide·5 min
Understanding moisturizers
Almost every moisturiser is built from humectants, emollients, and occlusives. The differences between products are largely differences in ratio.
SkinBeginner·Explainer·5 min
How hair products work
Hair products divide into three functions: removing material from hair and scalp, improving the surface of the fibre, and holding a shape.
HairFoundation·Guide·7 min
Understanding cosmetic claims
Cosmetic claims are constrained by category. Learning which words are defined, which are conventions, and which are simply unregulated is the core skill of reading a product page.
GuidesFoundation·Guide·6 min
How to evaluate a product critically
A short, consistent process for judging a cosmetic product: what it is, what it claims, what the label supports, and whether the claim and the evidence match.
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