Seven tools promise to decode your INCI list. They work in very different ways - some are web databases, some are barcode apps, some are free and some are paid. Here is a plain, honest comparison so you can pick the right one in a minute, plus how to sanity-check any of them.
Features and pricing verified July 2026
Short answer
The best cosmetic ingredient checker is the one that fits how you shop. For a fast, free, multilingual read on any ingredient list, use a web tool like GlowLens or INCIDecoder. For comedogenic and irritant numbers, CosDNA is the classic. For barcode scanning in a store, use an app like Yuka or CodeCheck.
How to read this
"Ingredient checker" covers two quite different jobs. The first is reading an INCI list you already have - copied from a retailer page or printed on the box - and getting a plain-language breakdown of what each name is and whether it suits your skin. The second is scanning a barcode in a shop to get a quick verdict on a product you are holding. No single tool is best at both, so the honest answer depends on which job you need done.
Below we compare seven of the most-used tools side by side, then describe each one on its own terms - what it is genuinely good at, and where it falls short. We build one of them (GlowLens), so we have flagged our own row and kept the descriptions factual. All feature and pricing details were checked in July 2026 and can change, so treat the table as a starting point and confirm on each tool's own site.
Side by side
Seven checkers, compared honestly.
Scroll the table on mobile. "Method" is how the tool actually reaches a verdict; "Sources" is what that verdict leans on. Nothing here ranks the tools against each other - the right pick depends on your job to be done.
Tool
Platform
Price
How it works
Languages
Sources
GlowLensOur toolAI ingredient analysis in plain language
Web - any phone or desktop browser, no install
Free, no account needed to try
AI reads the INCI list and returns a 0-100 score plus plain-language notes and comedogenic, fungal-acne and pregnancy flags
English, German, French, Italian
Cites EU CosIng, SCCS, US CIR, EWG and dermatology literature
Look up a product or paste an ingredient list; each ingredient is explained and tagged, with a comedogenic and irritancy rating from 0 to 5
English
Formulator-written explanations with references
CosDNAThe legacy comedogenic-rating database
Web
Free, some features need a free account
Paste or search an ingredient list; each ingredient gets a comedogenic and an irritant rating from 0 to 5, plus safety notes
English and Chinese
Long-standing comedogenic and irritant rating tables
SkinSortRoutine builder and product comparison
Web, plus an iOS app
Freemium, core features free
Ingredient breakdowns, side-by-side product comparison, dupe finder and a routine builder that warns about conflicts, with filters like fungal-acne-safe
English
Science-backed ingredient breakdowns
CodeCheckThe German-speaking barcode scanner
iOS and Android app, barcode scan
Free with limited scans; Pro about 1.99 EUR/month or 11.99 EUR/year
Scan a barcode to see an ingredient breakdown and flags for palm oil, microplastics, silicones and allergens, across cosmetics, food and household
German and English
Expert and NGO assessments
YukaThe viral barcode health score
iOS and Android app, barcode scan
Free to scan; optional Premium is pay-what-you-want, about 10-20 USD/year
Scan a barcode for a 0-100 score and colour rating; cosmetics are scored by each ingredient's risk level, with better-rated alternatives suggested
Several, including English, French and German
Published toxicology research
EWG Skin DeepThe hazard-score reference
Web, plus an app
Free
Search a product or ingredient for a 1-10 hazard score built from a weight-of-evidence review across dozens of toxicity and regulatory databases
English
Around 60 toxicity, regulatory and study databases
A fast, free, multilingual read on any ingredient list
GlowLens is the tool we build, so here is the honest version. You paste an ingredient list or upload a photo of the label, and an AI model breaks it down ingredient by ingredient in plain language, adds a 0-100 overall score, and flags the things people actually worry about - pore-clogging, fungal-acne triggers and pregnancy cautions - with sources cited rather than asked to be trusted. It runs in the browser in four languages, with nothing to install and no account needed to try.
We are younger than the decade-old incumbents, so our analysed-product catalogue is smaller and still growing, and we read the ingredient list (pasted or photographed) rather than scanning a barcode.
Deep, trustworthy per-ingredient explanations in English
INCIDecoder is the reference many skincare enthusiasts reach for. Its explanations are written by people who understand formulation, it groups ingredients by what they do, and it links its sources instead of asking you to take a rating on faith. The product database is large, and where a product is missing you can paste its list into the decoder. If you want to genuinely understand an ingredient, it is hard to beat.
It is English-only and text-first: there is no single safety score and no barcode scanning, so a full label can take a little reading.
CosDNA
The legacy comedogenic-rating database
Quick comedogenic and irritant numbers per ingredient
CosDNA is the old guard, and it is still where a lot of people go for one specific thing: a fast comedogenic and irritant number on every ingredient in a formula. If you break out easily and want to spot the usual pore-clogging suspects, it does that job directly. It has been doing it for years, which is exactly why those rating tables are so widely cited.
The interface feels dated and the explanations are thin. Comedogenic ratings come from tests of raw ingredients, so treat them as a flag to check, not a verdict on a finished product.
SkinSort
Routine builder and product comparison
Building and comparing whole routines, not just single products
SkinSort is the most modern of the databases and thinks in terms of routines rather than single products. You can compare two products side by side, find dupes, filter for needs like fungal-acne-safe or fragrance-free, and build a routine that warns you when two products might not play nicely together. For planning a whole shelf, it is genuinely useful.
It is English-first, and the community and routine features are more the draw than a single, decisive safety verdict on one product.
CodeCheck
The German-speaking barcode scanner
Scanning barcodes in a shop, especially in German-speaking markets
CodeCheck is a store companion. You scan a barcode and it tells you what is inside and flags the things a lot of shoppers avoid - palm oil, microplastics, silicones, certain allergens - across cosmetics as well as food and household products. In the DACH region its barcode database is deep, which makes it a practical in-aisle second opinion.
It is app-only and barcode-dependent, with a limited number of free scans before Pro, so it is less useful for a product that is not in the barcode database.
Yuka
The viral barcode health score
A simple, popular in-store barcode verdict with suggested swaps
Yuka is the app that made barcode scanning mainstream. Point it at a product and you get a clear colour and a 0-100 score, and when something rates poorly it suggests better-rated alternatives. For a quick yes-or-no while standing in a shop, with a huge scanned catalogue behind it, it is hard to beat on convenience.
It is app-only and barcode-based, and the single risk score is simple by design - light on the per-ingredient nuance you get from a database, and its scoring approach is sometimes debated.
EWG Skin Deep
The hazard-score reference
Hazard-focused research on an ingredient's safety profile
EWG Skin Deep is the best-known hazard database. Each ingredient and product carries a 1-to-10 hazard score assembled from dozens of toxicity and regulatory sources, so it is a solid place to research the safety profile of a specific ingredient in depth. As a free, well-known reference it carries real weight in search results and conversations.
It is hazard-focused rather than pore-clogging or skin-type focused, English-only, and its cautious, precautionary approach to scoring is debated by some scientists.
How to choose
What actually matters.
The label "best" is less useful than a match to how you shop. Four things separate a checker you will trust from one you will quietly stop using.
1
Does it show its sources?
The most useful checkers explain where a verdict comes from - regulatory bodies like the EU's CosIng and the SCCS, the US CIR panel, or peer-reviewed dermatology - rather than handing you a number to trust blindly. A score you can trace is a score you can actually rely on.
2
Does it cover your products?
A barcode app is only as good as its barcode database, and a product tool is only as good as its catalogue. If a tool lets you paste or photograph the ingredient list directly, coverage stops being a wall - you can check anything, even a brand it has never seen.
3
Does it speak your language?
Most of the well-known checkers are English-only, which is a real gap if you shop in German, French or Italian. A tool that reads INCI labels natively in your language removes the guesswork of translating chemical names yourself.
4
Is it free and low-friction?
The tools you will actually use day to day are the ones that do not gate the basics behind an account, an install or a scan limit. Free-to-try, no-signup, works-in-the-browser beats a powerful tool you have to commit to before you can see if it helps.
Questions
Ingredient checkers, answered simply.
What is the best cosmetic ingredient checker?
There is no single winner - it depends on the job. For a fast, free, multilingual read on an ingredient list in the browser, GlowLens and INCIDecoder are strong picks. For comedogenic and irritant numbers, CosDNA is the classic reference. For scanning a barcode in a shop, Yuka and CodeCheck are the go-to apps, and EWG Skin Deep is the best-known hazard database. Match the tool to how you shop rather than looking for one overall best.
What is the best free ingredient checker?
Several of the best options are free. GlowLens, INCIDecoder, CosDNA and EWG Skin Deep are free to use on the web, and Yuka is free to scan on mobile. GlowLens and INCIDecoder need no account to start, while CosDNA and some apps ask you to register or offer a paid tier for extras. If you want a free, no-signup breakdown in English, German, French or Italian, GlowLens is built for exactly that.
CosDNA or INCIDecoder - which is better?
They are good at different things. CosDNA gives you fast comedogenic and irritant numbers per ingredient, which is handy for acne-prone skin, but its interface is dated and its explanations are brief. INCIDecoder offers richer, formulator-written explanations with sources, which is better for genuinely understanding an ingredient. Many people use CosDNA for the ratings and INCIDecoder for the depth, or a scored tool like GlowLens to get both a verdict and plain-language context at once.
How do I check if a cosmetic ingredient is safe?
Copy the INCI ingredient list from the product page or box, paste it into an ingredient checker, and read the per-ingredient breakdown. Look for a tool that cites credible sources, flags concerns relevant to you - pore-clogging, fungal-acne, pregnancy, allergens - and explains findings in plain language. Remember that "safe" depends on your skin and the whole formula, not one ingredient in isolation, so use the result as informed guidance rather than a medical verdict.
Is there an app to scan cosmetic ingredients?
Yes. Yuka and CodeCheck are the best-known apps that scan a product barcode and return an ingredient breakdown and score, and both are free to start. If the product has no barcode or is not in the database, a web tool that reads the ingredient list directly is more reliable - GlowLens, for instance, works in any browser and lets you paste the list or upload a photo of the label, with no app to install.
How accurate are cosmetic ingredient checkers?
They are a helpful guide, not a lab result. Most reputable checkers draw on the same public sources - EU CosIng, the SCCS, the US CIR panel and toxicology research - so the underlying data is broadly sound. The differences are in interpretation: hazard scores, comedogenic ratings and risk scores each simplify a complex picture, and comedogenic ratings in particular come from tests of raw ingredients rather than finished formulas. Use them to spot things worth a closer look, and patch-test anything new.
What makes GlowLens different?
GlowLens combines things the other tools tend to split up: an AI breakdown in plain language, a 0-100 score, and the flags people search for most - pore-clogging, fungal-acne and pregnancy - with sources cited, all free in the browser and natively in English, German, French and Italian. You can paste an ingredient list or photograph a label, with no app and no account to try. We are younger, so our product catalogue is still growing, and we read the ingredient list rather than a barcode - but for a fast, sourced, multilingual read, that is the trade we chose.
Try it in your language
Check any label in seconds.
Paste an ingredient list or photograph a label and see every ingredient broken down, scored and flagged - free, in four languages, no account needed.