Use 50SKIN at checkout for 50% off (forever). Now until April 1st, 2026 when our pricing increases!
Paula's Choice has a genuinely excellent ingredient dictionary — but it rates ingredients for general skin benefit, not acne risk, and it's tied to selling their own products. EWG's Skin Deep rates ingredients for broad safety and toxicity, which has almost nothing to do with whether something breaks you out (and its scoring is widely criticized as alarmist). Neither was built for acne, and neither was built for professionals working through a client's routine. ChekIt gives one decisive thing the others don't: a fast, acne-specific verdict on a whole product, designed for the treatment room. Free to try.
If you've gone looking for an ingredient checker, you've hit Paula's Choice and EWG within about thirty seconds of searching. They dominate the space. They're well-funded, well-ranked, and genuinely useful — for what they're built to do.
The trouble is that estheticians keep reaching for consumer tools to do a professional, acne-specific job, and then wondering why the answers feel off. So let's be precise about what each tool is actually for, where it shines, and where it leaves you guessing. We've already covered CosDNA and INCIDecoder in a separate breakdown — this one tackles the two biggest consumer-facing names.
Paula's Choice built one of the most respected ingredient references on the internet. Their dictionary is genuinely well-researched and written in plain language.
Understanding what a single ingredient does, in plain English, when you have time to read. It's a fantastic encyclopedia. It's just not an acne screening tool, and it's not built to audit a client's twelve-product routine between appointments.
EWG (Environmental Working Group) runs Skin Deep, a massive database that scores cosmetics and ingredients on a 1–10 "hazard" scale. It's enormously popular with the clean-beauty crowd.
Clients who care about broad ingredient "safety," sustainability, and allergen avoidance. If that's their value system, EWG speaks their language. But for "will this clear or congest my skin?" — it's the wrong instrument entirely.
ChekIt was built backward from the others: it starts with the acne client and the professional helping them, not with a general ingredient encyclopedia.
ChekIt is laser-focused on acne and pore-clogging risk. If a client's core question is "what does niacinamide do for my skin?" — Paula's Choice's dictionary is the better read. If their question is "is this product full of environmental contaminants?" — that's an EWG-style question. ChekIt's job is the one those tools don't do well: will this product break my acne-prone client out, and which ingredient is the culprit?
Estheticians auditing client routines, and acne-prone clients who want a straight answer fast. It's the professional's screening tool, not a consumer encyclopedia.
If you want the full breakdown, keep reading the sections below — each tool does a very different job.
Use the right tool for the question:
For estheticians specifically, the daily job is almost always that third question. You're sitting across from a client whose routine might be sabotaging your treatments, and you need a fast, decisive, acne-focused read on whole products — not an ingredient-by-ingredient encyclopedia and not a toxicity score that ignores breakouts entirely.
That's the gap ChekIt fills. It doesn't try to be Paula's Choice or EWG. It does the one thing those excellent-but-different tools were never designed for: give professionals a quick acne verdict they can act on between appointments.
ChekIt's core features are free. Paste any ingredient list and get an instant Acne-Safe verdict — every pore-clogging ingredient flagged, rated, and explained.
For what it does, yes — it's one of the better-researched ingredient dictionaries available, with plain-language, evidence-minded explanations. The limitation is scope: it rates ingredients for general skin benefit, not acne risk, and it's run by a company that sells skincare. For "will this clog my pores?" it's not the right tool.
Because EWG's Skin Deep scores ingredients for broad "hazard" and toxicity, which has essentially no relationship to whether something causes breakouts. A comedogenic ingredient can score a safe green, and harmless ingredients can get flagged. Its methodology is also widely criticized as alarmist by dermatologists and cosmetic chemists.
ChekIt is acne-specific and product-level. Instead of looking up one ingredient at a time, you paste a whole list and get a decisive Acne-Safe verdict with comedogenic ratings on each flagged ingredient. It's built for professionals to use fast during consultations, with photo-to-text and no product-company bias.
Absolutely. A lot of estheticians use ChekIt for the fast acne screen during a consultation, then reach for Paula's Choice's dictionary when a client wants to understand what a specific beneficial ingredient actually does. They answer different questions — use whichever matches the question in front of you.
