The evidence, explained.

Your skin isn't sterile — it hosts its own ecosystem of bacteria that plays a real role in barrier health, inflammation, and breakouts. Here's what disrupts it, and what the evidence says helps restore it.

Sensitive skin isn't a diagnosis — it's a barrier condition. Here's how to identify your specific triggers and build a routine that supports skin instead of provoking it.

Retinol works — but not everyone can tolerate it. Here's what the evidence actually says about bakuchiol and other alternatives, and who should consider switching.

Tight, flaky, reactive skin is usually a barrier problem, not a hydration problem. Here's how to tell the difference — and the repair routine that actually works.