Oil & Congestion
The research behind salicylic acid's exfoliating action comes from products left on the skin. Here is what that means for a 2% cleanser you rinse off in seconds, and how to use one well.
5 min read
Oil & Congestion
Oil output differs across the face and shifts with the season. Here is what a five-site measurement study shows and how to build a simple zoned routine without over-correcting.
4 min read
Oil & Congestion
A 62-woman measurement study found oilier skin was not the most hydrated, and a 27-woman trial saw hydration rise without any change in oil output. What that means for an oily-skin routine.
5 min read
Oil & Congestion
The non-comedogenic label is unregulated, and the 0-to-5 ingredient ratings behind it come from rabbit ears and small patch tests. Here is how to read the claim and test a product yourself.
5 min read
Oil & Congestion
The tiny dots on the nose and chin are often normal sebaceous filaments, not plugged pores. Here is how to tell the difference, what published research says about oil and pore size, and a gentler routine.
5 min read
Oil & Congestion
A 60-person imaging study tied pore size most strongly to sebum output, while a million-person dataset added age, sex and climate patterns. Here is what that means for a realistic routine, and what a 2% niacinamide trial did and did not measure.
5 min read
Oil & Congestion
Water alone left more than half of sunscreen on skin in a small trial. Here is how a regular cleanser and a cleansing oil compared, and when a second cleanse earns its place.
5 min read
Oil & Congestion
The reassurance printed on oily-skin sunscreen bottles rests on a term the FDA never defined or tested. Here is what actually predicts a shine-free finish.
5 min read
Oil & Congestion
The dots lining the nose that pore strips promise to erase are open, functioning oil channels rather than blockages, and dermatology sources agree the follicle refills within about 30 days of being extracted.
5 min read
Oil & Congestion
The claim that salicylic acid rinses off before it can work traces back to a 2011 lab study of water-soluble AHAs in shampoo and conditioner, not salicylic acid. The thicker-back-skin explanation does not hold up cleanly either.
7 min read
Oil & Congestion
A viral Reddit question about sudden oiliness has a more specific answer than overwashing. Sebaceous glands take their cues from androgens, stress hormones, and cycle-phase estrogen, not from how stripped the surface feels.
5 min read
