Free · instant · no signup
Know your dry-skin risk before your skin does.
Check today's forecast of indoor drying stresses across the USA
- Low Risk
- First Alert
- Special Care
- Enhanced Care
What’s the drying stress where you live?
Enter your city or ZIP. See your current Dry Skin Index (DSI)—no signup.
Free Guide Lite
Will it get drier this week?
Get your local seven-day outlook, see how today compares with your area’s year, and receive an optional weekly care cue.
Get my free local outlookFree Guide Lite · No password or credit card.
Know before your skin feels it.
Weather fronts, building properties, and seasonal shifts quietly change the moisture in your home's air — often days before your skin shows it. Dermidia provides the tools to track those changes so your skincare routine stays one step ahead, in every season.
The path forward
Guide Lite is free. No password or credit card is needed, and your email is not shared with 3rd parties.
Why would I need this?
Dry-skin weather often arrives before your routine changes.
You may notice the tightness later, but the environmental setup starts earlier: outdoor air gets drier, buildings exchange that air, heating lowers indoor relative humidity, and skin loses water more readily.
Outdoor air
Cold or dry weather
Seasonal weather controls how much water vapor enters a home.
Building properties
Humidity changes
Indoor humidity changes in response to vapor buffering by building materials and heating.
Water vapor potential
Stronger drying gradient
The driving force for moisture loss becomes stronger around the skin.
Dry Skin Index
0-10 DSI scale
Dermidia translates that physics into a practical skin care signal.
Skin Care
Leave-on products
Lotions
Leave-on products are an essential part of enhancing skin hydration.
Indoor humidity
Room humidifiers
When DSI is elevated, humidification can help reduce dermal drying stresses.
Start with today, then plan for the week and year
The free forecast answers today's question: how hard is the air where you live pulling on your skin right now? Dermidia Guide answers the next one: how should your skin care change month by month as your dry-skin season builds and eases?
Step 1
Current Dry Skin Index
Enter your city or ZIP code for a current-conditions Dry Skin Index snapshot — how strongly the air may pull moisture from your skin right now.
- Instant — no email, no account
- Current modeled DSI range
- Simple care cues by action level
Step 2
Dermidia Guide Lite
Save your location with a secure email link. Guide Lite gives you current DSI, a seven-day outlook, a bounded 52-week context review, and one simple weekly care cue.
- No password or credit card
- Current DSI, 7-day outlook, and 52-week context
- Optional light weekly email for your saved area
Still not sure the signal matters?
Compare Boston and Miami in winter. The contrast makes the DSI tangible: location can change the indoor drying burden, which changes how useful a weekly care cue can be.
Dermidia Guide Lite
Save your skin-weather signal in Guide Lite
Once the local result makes the pattern clear, Guide Lite is the practical next step: a saved current and seven-day DSI dashboard, a bounded 52-week context review, and one simple weekly care cue for your area.
Your email is used for Dermidia Guide Lite and is not shared with 3rd parties.