Natural Beauty Tools & Calculators
Free, practical tools for a clean, natural routine — dilute essential oils safely, time your sunscreen, layer your skincare in order, track shelf life, plan a patch test, and mix DIY blends to the right strength.
Essential Oil Dilution Calculator
Work out how many drops of essential oil to add to a carrier for a safe target dilution, or check the strength of a blend you already mixed — the difference between a soothing face oil and a stinging one
SPF Reapplication Timer
Turn a day in the sun into a reapplication schedule — every two hours, or tighter when swimming and sweating — and estimate how much sunscreen you'll actually use with the shot-glass guideline
Skincare Routine Layering Planner
Tick the products you use and get them in the right order for morning or night — thinnest to thickest, the waits that matter, SPF last, and warnings on the actives best kept apart
Product Shelf-Life & PAO Tracker
Log an open date and the little open-jar PAO symbol to get a product's use-by date and days remaining — vital for natural, preservative-light formulas that can turn sooner than you'd think
Patch Test Scheduler
Schedule a patch test for a new product — 24 and 48-hour checks for mild formulas, daily checks across a week for leave-on actives — and get the date you're clear to use it if nothing reacts
Ingredient Concentration Mixer
Blend DIY skincare by weight — weigh an active to a target percentage, dilute a stronger stock down with C1·V1 = C2·V2, or read back the concentration of a batch you've already made