Air Quality

Air Quality

Phoenix Poor-Air Season Meets Dry Desert Air: A Gentle Skin Routine and What the Evidence Shows

Winter particle advisories arrive in Phoenix just as the air is at its driest. Here is what lab research does and does not show about particles and the skin barrier, plus a simple routine.

5 min read

Air Quality

Wood Smoke Season: What the PM2.5 Research Says About Skin, and a Gentle Routine

A January 2026 study put home wood burning at about 22% of winter outdoor PM2.5 in the US. Here is what lab research suggests for skin and a simple, low-effort evening routine.

4 min read

Air Quality

Does PM2.5 Show Up on Skin? What the Newest Meta-Analysis Can and Cannot Say

Poor air days trigger bold skincare claims. A December 2025 meta-analysis found only four cohorts and low-certainty links to pigment spots and wrinkles. Here is a calm routine.

5 min read

Air Quality

Los Angeles Smog Days: Why Ozone Timing and Gentle Cleansing Matter More Than Another Serum

Los Angeles-Long Beach is again the most ozone-polluted metro in the U.S. Here is what the skin-pollution reviews support, and why the simplest changes may beat adding steps.

5 min read

Air Quality

Ozone Days and Your Skin: What Two Small Studies Say About Vitamin E and Skin Oil

Ground-level ozone is invisible, peaks around midday, and reacts with the oils and vitamin E in the outer skin layer. Here is what the research measured, and a gentle poor-air-day routine.

4 min read

Air Quality

Poor Air Day in Chicago: What the Research Supports for Your Skin Routine

When Chicago's air quality turns poor, skin faces fine particles and oxidative stress. Here is what published research supports, and where cleansing claims outrun the evidence.

5 min read

Air Quality

New York's Ozone Advisories Didn't End With Summer, and Ozone Hits Skin Differently Than Smoke Does

New York issued another ozone health advisory in August 2026 and ranks 12th worst in the nation for ozone. The chemistry shows ozone attacks skin's surface oil, not the follicles, which changes what actually helps on a high-ozone day.

6 min read

Air Quality

Chicago's Air Quality Keeps Swinging Back to Poor: What Repeated Smoke Exposure Does to Skin

Chicago's air quality has ping-ponged between record-bad and merely moderate all summer, and it ticked back into poor territory again this week. The up-and-down pattern, not any single smoke event, is what actually wears down the skin barrier.

5 min read

Air Quality

LA's Ozone Advisories Keep Coming Back: What Ground-Level Smog Actually Does to Skin

Los Angeles County has issued repeated ozone advisories this summer, but the same 2024 chamber study behind the smog-and-skin headlines found something the warnings leave out. Here is what the research actually supports, and what it does not.

5 min read

Air Quality

New York's Air Quality Just Dropped Again: What Smoke and Particulate Matter Actually Do to Skin

A poor air quality reading in New York this week echoes the July 2026 wildfire smoke event that pushed the city's AQI to 155. Here is what the research says PM2.5 actually does to skin, and which routine steps hold up.

5 min read