Makeup Identifier·Guides

How to Read Makeup Ingredients (And Which Ones to Avoid)

Decode any makeup ingredient label in seconds. The 12 ingredients dermatologists watch for, what 'non-comedogenic' actually means, and how to scan an ingredient list with your phone.

Published March 22, 2026·Updated May 2, 2026·10 min read

The ingredient list on the back of a lipstick can run to forty lines of unpronounceable Latin and chemistry. Most people skip it. But buried in those forty lines are the answers to almost every question that drives a purchase decision: will this break me out, is it cruelty-free, is it pregnancy-safe, is it the same formula as my last lipstick that wore beautifully?

Here is how to read a makeup ingredient label fast — and how to scan one with your phone if you would rather skip the decoding entirely.

How an INCI ingredient list works

INCI stands for International Nomenclature of Cosmetic Ingredients. Every ingredient on a cosmetic label uses an INCI name. The list is ordered by concentration, from highest to lowest, until you reach the 1% threshold — after which ingredients can be listed in any order. That means the first five ingredients tell you what is really inside the product; the last twenty are largely fragrance compounds, preservatives, and pigments.

Reading the first five ingredients

The first five typically include water (aqua), an emollient (silicone, oil, or ester), a film-former, a wax (for solid products), and the primary active. If a "vitamin C serum" lists ascorbic acid as the seventeenth ingredient, it almost certainly will not deliver vitamin C results.

Common ingredient categories — what they actually do

Emollients

Soften and condition. Examples: dimethicone, isohexadecane, jojoba oil, squalane. Dimethicone gets a bad reputation online but is one of the safest, most studied ingredients in cosmetics.

Humectants

Attract water to the skin. Examples: glycerin, hyaluronic acid, butylene glycol.

Preservatives

Keep the product from growing bacteria. Examples: phenoxyethanol, ethylhexylglycerin, sodium benzoate. Without preservatives, water-based products would spoil within weeks.

Fragrance

Listed as "fragrance" or "parfum". This is the most common trigger for makeup-related allergic reactions. "Unscented" products can still contain masking fragrance; "fragrance-free" is the stricter label.

Pigments

The color. Listed as CI (Color Index) numbers or by name (titanium dioxide, iron oxides, mica, carmine).

The 12 ingredients to watch for

Parabens (methyl-, propyl-, butyl-) — common preservatives, debated for endocrine effects.
Formaldehyde releasers (DMDM hydantoin, imidazolidinyl urea) — slowly release small amounts of formaldehyde.
Phthalates in fragrance — often hidden under "parfum"; endocrine-disruption concern.
Synthetic dyes (FD&C, D&C) — coal-tar-derived; some are restricted in the EU but allowed in the US.
Talc — historically associated with asbestos contamination; certified talc is now safer but many brands have moved away.
Coconut oil & isopropyl myristate — high comedogenic ratings; can clog pores even in "non-comedogenic" products.
Carmine — natural red pigment derived from insects; not vegan.
Lanolin — sheep wool wax; not vegan, occasional allergen.
Beeswax (cera alba) — not vegan.
Essential oils in high concentration — lavender, peppermint, citrus oils can trigger contact dermatitis.
Retinol & retinyl palmitate — not pregnancy-safe.
Salicylic acid (BHA) over 2% — caution in pregnancy.

Important caveat: most of these are legal and used safely by millions of people. The question is not whether they are inherently dangerous, but whether they suit your skin and life stage.

What "non-comedogenic" actually means

"Non-comedogenic" means the formula is unlikely to clog pores. It is a marketing claim, not a regulated term. To verify, check the actual ingredient list against a comedogenic rating chart. Common pore-clogging ingredients that frequently appear in products labelled "non-comedogenic" include coconut oil (rating 4/5), isopropyl myristate (5/5), and lanolin (4/5).

How to scan a makeup ingredient list with your phone

Open Makeup Identifier and tap "scan ingredients".
Photograph the back-of-package ingredient list in good light.
The app runs OCR, parses each INCI name, and cross-references against safety databases (EWG Skin Deep, INCI Decoder, CIR).
You get a flag list: irritants, allergens, comedogens, non-vegan ingredients, and pregnancy concerns.
Tap any flagged ingredient to see its actual function and the research it is based on.

Cruelty-free vs. vegan: the labels that matter

Cruelty-free means the product was not tested on animals at any stage. Look for Leaping Bunny, PETA's Beauty Without Bunnies, or Choose Cruelty Free certifications.

Vegan means the product contains no animal-derived ingredients. A cruelty-free product can still contain carmine (insects), lanolin (sheep), or beeswax. Always check both labels if both matter to you.

Pregnancy-safe makeup: a quick checklist

Most foundations, lipsticks, and eyeshadows are pregnancy-safe. The ingredients to watch for in face products are:

Retinol, retinyl palmitate, tretinoin, adapalene (avoid)
Salicylic acid above 2% (limit)
Hydroquinone (avoid)
Chemical sunscreens with oxybenzone (limit; mineral sunscreens preferred)

Frequently asked questions

Can an app scan makeup ingredients from a label?

Yes. Makeup Identifier reads ingredient labels using OCR and cross-references each ingredient against a safety database (EWG Skin Deep, INCI Decoder, CIR Cosmetic Ingredient Review), then flags potential irritants, allergens, comedogens, and pregnancy-incompatible ingredients.

Which makeup ingredients should I avoid?

There is no universal list, but commonly flagged ingredients include parabens (preservatives), formaldehyde-releasing preservatives (DMDM hydantoin), certain phthalates (in fragrance), high concentrations of essential oils for sensitive skin, and coal-tar-derived synthetic dyes. Most are legal and safe; the question is whether they suit your skin.

What does 'non-comedogenic' actually mean?

It means the formula is unlikely to clog pores. It's a marketing term, not a regulated one. To verify, check the actual ingredient list against a comedogenic rating chart — coconut oil, isopropyl myristate, and lanolin are common pore-cloggers even in products labelled 'non-comedogenic'.

How do I know if a makeup product is vegan or cruelty-free?

Cruelty-free means the product was not tested on animals; vegan means it contains no animal-derived ingredients. Look for Leaping Bunny, PETA, or Choose Cruelty Free certifications. Makeup Identifier flags non-vegan ingredients (carmine, lanolin, beeswax, guanine) automatically when you scan a label.