Lumiere
No sign-up, no email
Free skincare tools
Two things people ask constantly, answered in your browser in about five seconds. Everything runs locally — nothing you type is sent anywhere.
Free tool
Skincare Expiry Calculator
Pick a product type, enter the date you opened it, and see exactly when it stops being worth using — with the typical period-after-opening for 18 product categories built in.
Open calculator Free toolActive Ingredient Conflict Checker
Choose two actives and get a straight verdict: layer them, separate them by time of day, alternate nights, or don't combine them at all — plus the reason why.
Open checkerThe same answers, for your whole shelf
Lumiere tracks every product you own, counts down every expiry, and checks every new purchase against what you already use.
Free to download. Subscription unlocks unlimited scans.