Blog
Skincare ingredients explained with our data and named sources.
- Should you copy Jeon Somi's skincare routine?Jeon Somi's skincare routine was built to fit her. Here are the steps she showed on camera, and how to find the routine that fits your own skin.
- Should you copy Sakura's skincare routine?LE SSERAFIM's Sakura showed her skincare routine in a February 2024 video. Here's why it fits her, and how to find the one that fits you.
- Retinol cream: how much is really inside?Does a retinol cream say how much retinol is inside? PERBETE checked 587 labels, the amounts studies used, and the EU limits, in plain words.
- Does glycolic acid help with dark spots?Does glycolic acid help with dark spots? What the cream and peel studies found, why it raises sun sensitivity, and which ingredients have more study.
- Dark spots from acne: what the studies testedHow to get rid of dark spots from acne? What causes them, what azelaic acid, tranexamic acid and niacinamide did in studies, and why sunscreen matters.
- How to tell if your skin barrier is damagedHow to tell if your skin barrier is damaged: the signs people notice, what dry air and harsh washes do in studies, and what helped barrier repair.
- How often to use salicylic acid, per the labelHow often to use salicylic acid? The US acne label rule says start once a day. Here is what it says about dryness, cleansers and mixing acne products.
- Azelaic acid 10 vs 15%: serum or prescription?Azelaic acid 10 vs 15% explained: which strength is a US prescription, what the studies tested, and what 86 product labels show about the 10% serums.
- Does PDRN work? What the cream studies showDoes PDRN work in a cream? PERBETE read the face studies, checked where PDRN sits on 734 product labels, and shows what is still missing.
- Free-from labels checked on 2,816 productsPERBETE checked free-from labels like fragrance-free, paraben-free and vegan on 2,816 skincare products against their own ingredient lists. Most matched.