PoreIQHow to Read a Skincare Ingredient Label (INCI List Explained)
What the order of ingredients means, how to spot actives and common irritants, and why "fragrance" deserves a second look.
The list is in order of amount
In the US, cosmetic ingredients are listed in descending order of concentration, down to 1%. Below 1%, they can appear in any order. So the first five or so ingredients make up most of the product.
Ingredients use INCI names
Labels use standardized INCI names. Water is "Aqua", vitamin E is "Tocopherol", vitamin B3 is "Niacinamide", and "Sodium Hyaluronate" is a form of Hyaluronic Acid. Learning a dozen common names covers most labels.
Finding the active ingredient
Marketing often highlights an ingredient that appears near the very end of the list. If a "retinol cream" lists retinol after the preservatives and fragrance, there is probably very little of it. Brands that use meaningful amounts usually state the percentage.
Ingredients to double-check
- Fragrance and essential oils — a common cause of irritation and allergy.
- Alcohol Denat. near the top of the list — can be drying.
- Multiple exfoliating acids in one product — higher irritation risk.
Fatty alcohols such as cetyl or cetearyl alcohol are moisturizing and are not the same as drying alcohol.
"Clean", "natural" and "non-toxic"
These are marketing terms with no regulated definition. A natural ingredient is not automatically gentler — essential oils are natural and are frequent irritants.
A faster way
Photograph the ingredient list and let PoreIQ read it for you: it highlights likely benefits, potential risks such as breakouts or irritation, and how to use the product. You can then check it against other products you own.
Frequently asked questions
What does "non-comedogenic" mean?
It means the product is designed not to clog pores. The term is not strictly regulated, so it is a helpful hint rather than a guarantee.
Are ingredients under 1% unimportant?
Not necessarily. Some ingredients, like retinol or fragrance, can have an effect even at low concentrations.
Keep reading
- How to Find Your Skin Type at Home (The 30-Minute Bare-Face Test)
- Skincare Routine Order: What to Apply First (AM and PM)
- How to Get Rid of Blackheads (and When They Are Just Sebaceous Filaments)
General skincare information, not medical advice. Sources include the American Academy of Dermatology (acne tips, dry skin tips). See our editorial policy.