misspeytonsmith

The claim is well supported by several skin-physiology studies. A landmark study published in the International Journal of Cosmetic Science (Muizzuddin et al., 2006) followed women with regular cycles for 2-3 months and found the skin barrier was weakest between cycle days 22-26, skin was driest between days 1-6, and sebum secretion peaked between days 16-20 — a pattern directly tied to estrogen and progesterone fluctuations. A more recent study (BMC Women's Health, 2023, urban Chinese women) confirms that cycle irregularity comes with lower skin hydration, higher transepidermal water loss, and higher sebum production — signs of a weakened skin barrier. A 2025 sebum lipidomics study details the mechanics further: sebum lipids shift significantly between the ovulatory and early luteal phases, consistent with estrogen's rise and fall. The advice to be "gentler" with your skin during these phases is therefore a reasonable conclusion proportionate to solid data, without overstating the mechanism. Verdict: holds up — the link between hormonal cycling and skin physiology is documented by several converging independent studies.