ComfiSkin vs CosDNA
CosDNA puts numbers next to ingredients for acne and irritation, without saying where they come from. ComfiSkin explains in plain words what each ingredient does, and whether the product suits your skin.
| Ingredient | Acne | Irritant | Safety |
|---|---|---|---|
| Glycerin | 0 | 0 | 1 |
| Isopropyl Myristate | 5 | 3 | 1 |
| Centella Extract |
The same row, in ComfiSkinIsopropyl myristate softens and helps the cream spread. Your skin is oily and breakout-prone, so it’s worth watching.
An illustration
The short answer
CosDNA puts alarming numbers next to ingredients without saying where they come from. Pore-clogging ratings like these often trace back to old tests on rabbit ears, and a blank box just means nobody knows. Numbers like that make people nervous without making them any wiser.
What that means: you could be avoiding perfectly good products because of a number nobody can explain. ComfiSkin tells you what each ingredient does, in words, and whether the product suits you.
Side by side
| ComfiSkin | CosDNA | |
|---|---|---|
| How ingredients are described | In plain words | Numbers from 1 to 9, with no sources cited1 |
| What a blank means | Every ingredient is explained | No data, not “safe”1 |
| Tells you whether it suits your skin | Yes | No |
| Works in the shop aisle | Yes, scan the label | A website |
| Feels like the early internet | No | Yes |
Nobody knows where the numbers come from
CosDNA rates ingredients for acne, irritation and safety from 1 to 9. When Soko Glam’s magazine, The Klog, looked into the site, a chemist it interviewed said:1
“They don’t cite their sources, which makes it impossible to tell if the info is legitimate.”
The article added that you can’t tell whether the data came from humans, animals or something else, and that the old rabbit-ear tests once used to judge pore-clogging are no longer considered relevant to people. It also explained that a blank box means there’s no data, not that the ingredient is safe.1
What that means for you: a “5” might be based on a rabbit, a guess, or nothing you can check.
Unexplained numbers do real harm
A number without a source still feels scientific, so people trust it. They avoid good moisturisers over a “4”, build routines around pore-clogging ratings from old animal tests, and assume a blank box means safe. A “5” sounds alarming but tells you almost nothing: five out of what, for whom, at what amount?
That leaves you more anxious and no better informed, and it can push you away from products that would have suited you perfectly. ComfiSkin turns the ingredient list into short sentences about what each ingredient does, puts the ones you avoid first, and gives you one clear answer about whether the product suits your skin.
What that means for you: confident choices based on what ingredients actually do, not on mystery numbers.
What to do if you use CosDNA
- Don’t treat a high number as proof something will break you out. Many of these ratings trace back to old tests that don’t reflect real skin.
- Don’t treat a blank as “safe”. It just means there’s no data.
- Scan the product in ComfiSkin to see what each ingredient does and whether it suits your skin.
Sources
- Soko Glam, The Klog, “What is CosDNA?”, 13 March 2018. sokoglam.com
More comparisons
Get answers in words
See what each ingredient does and whether it suits you.
- Free, all of itNo plans, trials or paywalls. Every feature, for everyone.
- No sign-upNo account, no email, no password to lose.
- No ads, no trackingNothing about you is sold, shared or followed around the web.
- Your notes stay on your phoneWith a password-protected backup that only you control.
- Never asks for your faceIt reads the label, not you.
- Answers for your skinYour skin type, concerns, avoid list and routine, every time.