The INCI list on the back of your sunscreen isn't just fine print. It's the most honest snapshot of what you're actually putting on your skin. Learning to decode it takes just a few minutes, and it's the single best way to tell a clean, effective SPF from a marketing promise.
What Is an INCI List?
INCI stands for International Nomenclature of Cosmetic Ingredients. It's a standardised naming system used worldwide so that every ingredient appears under the same name, regardless of the brand or country.
A few rules to keep in mind:
- Ingredients are listed in descending order of concentration, down to 1%
- Below 1%, ingredients can appear in any order
- Latin names are used for botanical extracts (e.g. Helianthus annuus seed oil = sunflower seed oil)
Step 1: Identify the UV Filters
UV filters are the active ingredients, the reason the product is a sunscreen at all. There are two families to recognise:
Mineral filters (only two exist):
- Zinc oxide
- Titanium dioxide
Chemical filters (most common):
- Avobenzone (butyl methoxydibenzoylmethane)
- Octinoxate (ethylhexyl methoxycinnamate)
- Octocrylene
- Oxybenzone (benzophenone-3)
- Homosalate
- Octisalate (ethylhexyl salicylate)
If you only see zinc oxide and/or titanium dioxide in the filter section, it's a true mineral sunscreen. If any chemical filter appears, it's a chemical (or hybrid) sunscreen, even if the packaging says "natural".
Step 2: Spot the Ingredients to Avoid
Some UV filters and additives are best kept off your skin:
- Oxybenzone and octinoxate: linked to hormone disruption and coral bleaching
- Homosalate: restricted in Europe due to endocrine concerns
- Parfum / fragrance: a common cause of irritation and allergies
- Alcohol denat: drying for the skin barrier
- PEGs and silicones: occlusive and not always well tolerated
Step 3: Look for the Good Stuff
A well-formulated mineral sunscreen often pairs UV filters with beneficial ingredients:
- Plant oils: Helianthus annuus, Simmondsia chinensis (jojoba), Argania spinosa (argan)
- Antioxidants: tocopherol (vitamin E), green tea, niacinamide
- Soothing agents: Aloe barbadensis, bisabolol, allantoin
- Hydrators: glycerin, squalane, hyaluronic acid
The shorter the list and the more recognisable the ingredients, the cleaner the formula tends to be.
A Quick Decoding Checklist
Before you buy, ask yourself:
- Are the UV filters zinc oxide and/or titanium dioxide only?
- Is the list free from oxybenzone, octinoxate and homosalate?
- Does it avoid fragrance, alcohol denat. and unnecessary silicones?
- Are there nourishing or soothing ingredients alongside the filters?
Four yeses? You've found a clean, effective sunscreen.
The Odyskin Promise
At Odyskin, every INCI list is designed to be read, not hidden. Clean mineral filters, thoughtful botanicals, and nothing your skin doesn't need.
