How to read a beauty ingredient list without a chemistry degree

The ingredient list on a beauty product can look intimidating. Long names, Latin words and numbers fill the back of the pack in tiny print. Yet that list is one of the most useful things on the label. Once you know how it is organized, you can learn a lot about a product in under a minute.

This guide explains how ingredient lists work, what the common names mean, and the few things worth looking for or avoiding.

Ingredients are listed in order

In most countries, cosmetic ingredients must be listed in descending order of concentration. The ingredient with the most is listed first, then the next, and so on.

There is one exception. Ingredients present at less than about 1 percent can be listed in any order at the end. That is why you sometimes see a well known ingredient near the end of a list, after preservatives and fragrance. It is there, but in a small amount.

The practical takeaway is simple: the first five or six ingredients make up most of the product. If you want to know what a product mostly is, read those first.

Why the names look strange

Ingredient lists use a standard naming system called INCI. It means the same ingredient has the same name on every pack, wherever it was made. That consistency is useful, but it produces names that look unfamiliar.

Water is listed as aqua. Plant extracts use Latin names, such as Aloe barbadensis leaf juice for aloe vera. Many ingredients have chemical names even when they are gentle and common.

A long name does not mean an ingredient is harsh, and a natural sounding name does not mean it is gentle. Judge an ingredient by what it does, not by how it sounds.

Common ingredient groups

Most products are built from a few groups of ingredients.

The base. Water, aloe or a light oil usually comes first. This is the liquid the rest is dissolved or mixed into.

Humectants. These attract water. Glycerin, hyaluronic acid (often listed as sodium hyaluronate) and propanediol are common examples.

Emollients and oils. These soften skin and give creams their texture. Squalane, shea butter (Butyrospermum parkii) and plant oils are common.

Emulsifiers and thickeners. These hold oil and water together and give the product its texture.

Active ingredients. These are the ingredients a product is built around, such as niacinamide, vitamin C (ascorbic acid and related forms) or retinol. Their position in the list hints at how much is present.

Preservatives. Any product that contains water needs preservatives to stop bacteria and mold. Phenoxyethanol and sodium benzoate are common. A product without a preservative system would spoil quickly.

Fragrance. Listed as parfum or fragrance, sometimes followed by individual scent components such as limonene or linalool.

Fragrance and sensitive skin

Fragrance is one of the most common reasons for skin irritation. If your skin is sensitive, look for products labeled fragrance free and check that parfum does not appear in the list. Be aware that essential oils also add scent, even in products described as unscented.

"Unscented" and "fragrance free" do not always mean the same thing. Unscented sometimes means a masking fragrance has been added to cover the smell of other ingredients. Fragrance free usually means no fragrance has been added at all.

Allergens

If you know you are allergic to a particular ingredient, the ingredient list is where to check. Search for it by its INCI name, and check for related names. When in doubt, ask a doctor or pharmacist, and always patch test a new product on a small area of skin first.

The open jar symbol and dates

Look for a small open jar icon with a number such as 6M, 12M or 24M. It shows how many months the product is meant to be used for after you open it. Write the opening date on the pack with a marker to keep track.

Some products also have a best before date, especially those with a shorter shelf life before opening. Sunscreen often has an expiry date printed on the tube.

Claims on the front, facts on the back

The front of a pack is marketing. Words such as natural, clean or clinically inspired have no fixed meaning. The ingredient list on the back is the factual part. If you want to know what a product contains, turn it over.

On Dewora, each product page lists the type, skin type and size first, and we write "Not confirmed" where the retailer listing does not say. The full ingredient list is always on the retailer's page.

A quick routine for reading a list

1. Read the first five ingredients to see what the product mostly is.
2. Find the active ingredient and note how high up it appears.
3. Check for fragrance, essential oils and anything you avoid.
4. Find the open jar symbol and note the use by period.
5. Patch test before using the product on your face.

If you are building a routine, our simple routine guide shows how products fit together, and you can compare cleansers, serums and moisturizers in Skincare. For makeup labels, our shade matching guide explains undertones and finishes.

A note on health

We are not doctors or dermatologists, and this guide is general information, not medical advice. If you have a skin condition, allergies, or are pregnant or nursing, talk to a doctor or dermatologist before trying new products. Stop using any product that causes irritation.

Learning to read an ingredient list takes a few minutes, and it changes how you shop. Instead of trusting the front of the pack, you can see for yourself what is inside.