What Actually Ages Your Skin — and the One Daily Habit That Protects It

If you've started wondering what actually ages your skin — the dryness that wasn't there a year ago, a little sag along the jaw, lines that seem to have arrived overnight — this episode is the calm, clear answer. Registered nurse Joanne Wismeyer spent years in emergency and clinical care before building Stella, a platform that tracks your skin over time and lines it up against your sleep, stress, cycle and lifestyle. She's seen, up close, what's really driving the changes women notice in thei...