How to read a skincare product label

Updated: 2 October 2026

Read an ingredient list as an order of weight: heaviest first, down to the one percent mark, after which the rule lets the remaining entries sit in any order. The things that identify the product itself — how much is in the bottle, which batch it came from, who is answerable for it — are printed off the front, on an information panel, on a leaflet, or on the base of the jar.

What the order of an ingredient list means

The order is weight, and that is what the rule says it is. In the United States ingredients are declared in descending order of predominance. In the European Union the list is headed by the word ingredients and runs in descending order of weight of the ingredients at the time they are added to the cosmetic product. Two wordings, one idea: an entry near the top is a larger part of what is in the bottle than the entry under it.

The order stops being an order at the tail. The American rule lets ingredients present at a concentration not exceeding one percent be listed in any order after the ones above that, and color additives of any concentration may come in any order after everything that is not a color additive. The European rule is drawn the same way for ingredients present in concentrations of less than one percent, and for colorants other than hair colorants. So the tail of a long list is a set rather than a ranking, and reading it as a ranking reads something that was never written there.

A whole group of raw materials can also arrive as a single entry. Fragrance and flavor compounds may be declared as fragrance and flavor in the United States; in the European Union perfume and aromatic compositions and their raw materials are referred to by the terms parfum or aroma. And where the FDA has accepted an ingredient as a trade secret, the declaration may close with the phrase and other ingredients in place of that name.

That is the whole of what the order encodes: weight, at the moment the formula was mixed. What any one entry does is a different question, a position in a list does not answer it, and this page does not answer it either — that answer belongs to someone qualified to give it, and we are not going to put one here to make the page feel more useful.

Why the same formula reads as two different lists

The names are not free text. In the United States ingredients must be listed by their common or usual names, and the FDA does not accept Latin names, color index numbers or foreign-language terms as substitutes for them; those may follow in parentheses. That is where the familiar pairs come from — Water (Aqua), Fragrance (Parfum), Honey (Mel) — the common name first, the international one after it.

In the European Union the names come from a glossary of common ingredient names compiled and updated by the Commission, and that glossary takes account of internationally recognised nomenclatures including the International Nomenclature of Cosmetic Ingredients. Where an ingredient is not in the glossary yet, an internationally recognised nomenclature may be used on the label instead.

Which is why one product, bought twice in two countries, can carry two lists that look unlike each other and describe the same formula. If you are holding two boxes side by side, compare them as orders and as names from the same system. Compared as strings of text they will disagree even when nothing in the bottle differs.

Where the amount, the batch and the maker are printed

The amount sits on the front. In the United States the net quantity of contents belongs on the principal display panel and sits in the lower part of it, given by weight in pounds and ounces or as a fluid measure. In the European Union the figure is the nominal content at the time of packaging, given by weight or by volume. The same quantity under two conventions, which is why the same tube says fl. oz. on one carton and ml on another.

The company line is further back, and it is not always the company on the front. The name and business address on an American label may be the manufacturer's, the packer's or the distributor's, and where it is not the manufacturer's it is introduced by wording such as Manufactured for or Distributed by. On a European label it is the name or registered name and the address of the responsible person, and for an imported product the country of origin is specified as well.

The batch is the line that looks out of place, and that is how you find it. European labeling requires the batch number of manufacture or the reference for identifying the cosmetic product, and where this is impossible for practical reasons because the product is too small, the information need appear only on the packaging. The rule names the batch and not how it is printed, so in practice it arrives inked, stamped or pressed into the material rather than set with the artwork: the crimp of a tube, the base of a jar, the shoulder of a bottle.

When a carton has no room for all of this, European labeling moves the information onto an enclosed or attached leaflet, label, tape, tag or card, and puts a symbol on the container pointing at it. An unfamiliar symbol on a very small box is usually that symbol: an instruction to read the paper that came in the pack.

The line name and the product name are two different things

The largest words on the front are usually the brand and the line. Neither of them is the element the rule asks for. American labeling requires a statement of identity on the principal display panel, and it may be the common or usual name of the cosmetic, a descriptive name, or a fanciful name where the nature of the cosmetic is obvious. European labeling requires the function of the cosmetic product, unless it is clear from its presentation.

So a front panel reads in three layers rather than one: the brand, the line the product belongs to, and the words that say what the object is. The line is the layer that travels. One line covers a cleanser, a serum and a cream, all three carry the same large lettering, and the part that tells them apart is set smaller than the part that does not.

That also settles what is worth writing down when you are keeping track of what you own: the brand, and the product's own name. The line name on its own makes two different products look like one entry on a list, and it is the most common reason a shelf and its written version stop matching.

What a photo reads, and what you read

Glossa puts your real products on an illustrated shelf with a mirror above it, and plays each step of your routine as a small scene in that mirror. The shelf is built out of the things you actually own, so it has to know which thing is which.

Products get onto the shelf from one photo of them. What the photo reads is the printed product name and the brand — the identity layer from the front of the box. Those words are matched against a catalog of 19,550 products from 6,006 brands, and if something is not in there you add it by hand. Typing your shelf in works exactly as well as the photo, and it sends nothing anywhere.

That catalog is built from Open Beauty Facts, an open database of cosmetic products kept by volunteers and published under the Open Database License. Our copy of it holds product names and brands, which is the part a shelf needs to tell one bottle from another.

The ingredient list stays where it is useful, on the box, read by you. The front of the box is the part a photo can carry; the panel on the back is the part that rewards standing in the light with it for a minute.

Your routine, your notes and your history stay on your iPhone. The shelf photo leaves your phone only if you choose to take one, and it is not stored.

What Glossa does not do

Glossa is not a health product. It does not look at your skin, and it does not tell you what to put on it.

Glossa reads the identity words from the front of a bottle: the product name and the brand. The ingredient list is yours to read, and what you make of it is yours too.

Glossa shows the routine you built. It does not build one for you.

iPhone only, and Android is not planned.

Glossa at a glance

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