DewSkin: Skin Weather Guide

Stop guessing whether your hyaluronic acid serum is helping or
hurting today. DewSkin checks the local dew point — the true
measure of moisture in the air — and tells you exactly how your
active ingredients will behave right now.
Most people don't know that HA and glycerin pull moisture FROM
your skin on dry days instead of hydrating it. The dew point
changes daily, and so should your routine.
HOW IT WORKS
1. Set up your skin profile: skin type and which active ingredients
you use (HA, glycerin, retinol, vitamin C, AHA/BHA, niacinamide).
2. DewSkin fetches the current dew point, UV index, humidity, and
temperature at your location.
3. You get a personalized Skin Score and ingredient-by-ingredient
guidance: USE, ADJUST, or SKIP today.
It takes 15 seconds to set up. No account required.
DEW POINT INGREDIENT GUIDE
See at a glance which ingredients are safe today and which ones
to avoid. HA and glycerin get a green, yellow, or red status
based on the dew point. Tap any ingredient to read why.
SKIN SCORE
A daily 0–100 score combining dew point, UV index, temperature,
and humidity into one simple number. Know instantly whether it's
a great skin day or a day to simplify your routine.
RETINOL & ACID CROSS-CHECK (PRO)
Upgrade to Pro for deeper insights:
- Retinol + UV safety check
- AHA/BHA + UV photosensitivity warning
- Vitamin C stability guidance for heat and humidity
- Niacinamide + Vitamin C timing advice
- Hourly forecast to find the best skincare window
- AM/PM routine builder with live weather adjustment
- Unlimited product profiles
- Daily morning notification with today's routine tip
PRIVACY FIRST
All your skincare profiles are stored locally on your device.
No account, no tracking, no data shared. Location is used only
to fetch weather data from a public weather service and is never
stored on any server.
This app provides general skincare guidance based on publicly
available weather data. It is not medical advice and does not
replace consultation with a dermatologist.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/