The science, simplified

Your skin doesn't stay the same all month. Your routine shouldn't either.

Hormones rise and fall through the month, and your skin follows: barrier strength, oil, sensitivity, how quickly it heals. Cycle-synced skincare gives it what it needs when it needs it.

Explore your month — tap a phase or scroll through




NOT EVERY CYCLE IS 28 DAYS

You don't need a textbook cycle for this to work.

Most people don't track perfectly, and plenty don't bleed on a schedule at all. Your skin still shifts. Read the signals instead of the calendar.

On birth control

Hormonal contraception flattens the swing, so the phases are subtler. Go by how your skin feels rather than the date.

Perimenopause

Cycles get shorter and less predictable as estrogen declines. Expect more dryness and sensitivity, and lean into barrier care.

Irregular cycles

PCOS, postpartum, or simply irregular. Track oiliness, breakouts and tightness, and respond to those.

Start here

Find the phase you're in today.

Five questions on your cycle, your skin and how you feel. We'll point you to the week you're in and the serum made for it.