#Hour

The 24-hour skin clock: when collagen synthesis peaks and when TEWL spikes

TL;DR: The skin runs on a 24-hour clock. Cell proliferation peaks at midnight to 4am. Sebum output peaks at noon. TEWL spikes…

The 6-hour flight skincare protocol that does not involve a sheet mask

TL;DR: Cabin air sits at five to twelve percent relative humidity, which is drier than most deserts. The sheet mask people do…