"Is This Good for My Skin?" Comedogenic Ratings & Skin Types, Decoded

Type any ingredient into a search bar and you'll get a "comedogenic rating" out of 5, presented like a final verdict. It's a useful idea — but treated as gospel it'll have you fearing coconut oil and trusting things that break you out. Here's how to actually use it.

TL;DR — "Comedogenic" means pore-clogging. The 0–5 ratings you see online are a rough guide based largely on old tests of isolated ingredients — not finished products, and not your skin. A comedogenic ingredient isn't automatically a problem in a real formula, and "good for your skin" ultimately depends on your skin type and your own reactions.

What "comedogenic" means

A comedogenic ingredient is one that tends to clog pores, leading to comedones — blackheads and whiteheads. Online you'll see ingredients scored from 0 (won't clog) to 5 (highly likely to clog). The instinct behind it is sound: cosmetics genuinely can trigger breakouts ("acne cosmetica").

Why the ratings are a rough guide, not a verdict

Here's what those neat numbers don't tell you:

• They mostly come from isolated ingredients tested at high concentrations — often using old animal models (the "rabbit ear" assay). The concept has been formally re-evaluated and criticised for exactly this reason (Draelos & DiNardo, 2006).
• A finished product behaves differently. An ingredient with a scary rating can be perfectly fine at the small amount used in a real formula, alongside everything else.
• Concentration and formulation matter more than any single number on a list.

That said, the broad signal isn't nothing: research has linked products containing comedogenic ingredients to higher acne risk, so the category is worth being aware of — just not panicking over (cosmetic use & acne risk, 2025).

Treat comedogenic ratings like a weather forecast, not a diagnosis: helpful for planning, occasionally wrong, and no substitute for looking out the window at your own skin.

"Good for your skin" is personal

There's no universally "good" product, because skin differs:

• Oily / acne-prone: lighter, non-comedogenic-leaning textures and gel formulas often feel better; oil-regulating actives like niacinamide help.
• Dry: richer creams and occlusives; pore-clogging is less of a concern than moisture.
• Combination: you may need different things on different zones.
• Sensitive: the priority is fragrance-free, gentle formulas that respect the barrier — irritation, not clogging, is the usual trigger.

How to actually judge a product

• Read the whole formula, not one scary ingredient — see how to read a label.
• Patch test new products for a few days before going all-in.
• Track your own reactions. Your skin's track record beats any chart.
• Watch for your known triggers rather than a generic blacklist.

Match products to your skin, not a chart

Generic ratings can't see your skin — but a tool that knows your skin type can get a lot closer. Scangloo scans a product, decodes the full ingredient list, and flags what suits your skin and concerns, so "is this good for me?" finally gets a personal answer.