Your skincare questions, answered live.
Every tool runs on the same database as our reviews: every product, every INCI list, every interaction. No sign-up, nothing uploaded; it all works right in your browser.
Match & choose
Find what fits youMy Place
Your dashboard — today's routine, a skin check, and everything on the site that fits your skin: picks, answers, reading, tools and guides. Describe your skin once and every page adapts. Stored privately in your browser.
Routine Finder
Answer a short quiz and get a complete AM/PM routine matched to your skin type, concerns, and budget — from 11,000+ reviewed products.
Skin Type Quiz
Nine questions that actually determine your skin type — including whether you’re dehydrated rather than dry, and how reactive you really are.
Sunscreen Finder
Every real preference — mineral vs modern filters, activity, white cast, reef rules, eye sting — matched against 1,000+ scored sunscreens.
Dupe Finder
Search a pricey product and get honest, data-scored cheaper alternatives — with a transparent breakdown of what matches and what doesn’t.
Compare Products
Weigh up to three products across scores, ingredients, skin compatibility, and real user sentiment — row by row.
Check a product
Decode, vet, and verifyIngredient Decoder
Paste any ingredient list — or a photo of the label — and get every INCI name translated, with allergen, comedogenic, and pregnancy flags.
Conflict Checker
Pick the products you own and see instantly what clashes, what needs spacing out, and what genuinely works better side by side.
Pregnancy-Safe Checker
Audit your whole routine in seconds: per-product verdicts, the exact ingredient that’s the problem, and safe swaps for anything flagged.
Routine Order
Your products, sorted into the correct application order — with wait times, weekly frequency, and automatic retinoid/acid night splitting.
Patch Test Log
The proper way to try a new product: a guided at-home patch test protocol with a check schedule and a clear pass/stop verdict.
Fungal Acne Checker
Paste any ingredient list and see what feeds Malassezia — the fatty acids, esters, and ferments behind those itchy uniform bumps — then browse products formulated without them.
Pore-Clog Checker
Run an ingredient list against the comedogenic-rating tables and see exactly which ingredients score high — with honest context about what those decades-old ratings can and can’t tell you.
Plan & dose
Schedules and amountsFTU Calculator
Fingertip units, decoded: exactly how much cream each body area needs, and how long your tube will actually last at that rate.
Shelf-Life Tracker
Log when you opened each product and get toss-by dates from its period-after-opening — saved privately in your browser.
Skin Cycling Planner
Build your exfoliate → retinoid → recover rotation: a printable 14-night calendar tuned to your skin’s resilience, with what to apply each night.
Retinoid Ramp-Up
A week-by-week introduction schedule for retinol, adapalene, or tretinoin — build tolerance without the flaking, and know what’s normal.
Retinoid Strength Ladder
Find your current retinoid on the ladder — esters to retinol to retinal to prescription — and see when you’ve earned the next rung, with graded products waiting there.
Purging or Breaking Out?
Four questions separate a retinoid purge worth pushing through from a reaction worth stopping — what you started, when, where the bumps are, and what they look like.
Sun & spots
UV habits and skin checksSun Safety Guide
Find your Fitzpatrick phototype, then turn today’s UV index into real guidance: minimum SPF, burn-time window, and reapplication.
ABCDE Mole Check
Learn the five melanoma warning signs and walk through a structured self-check of any spot — education first, with clear next steps.
Sunscreen Amount Calculator
The reason SPF 50 performs like SPF 15 is dose. Get your real face and full-body amounts from your height and weight — and how many bottles a beach week actually takes.
Mole Map
Drop a marker on every mole you’re keeping an eye on, log dated observations per spot, and print the map for your next skin check.
Skin Cancer Risk Tier
Answer the established risk-factor questions — phototype, sunburn history, moles, family history — and get a risk tier with a surveillance plan to match.
Severity scores
Clinical measures, self-assessedPASI Calculator
The psoriasis severity index used in every trial — four regions scored for redness, thickness, and scale, weighted by area, out of 72. Self-assessed, tracked over time.
PGA×BSA Score
The fast psoriasis severity measure: rate how your plaques look on a 0–4 scale, multiply by the skin area involved, and track the product — validated against full PASI.
Psoriatic Arthritis Screen
Up to a third of people with psoriasis develop joint disease, often silently. PEST is the validated 5-question screen — three yeses means ask about a rheumatology referral.
Acne Severity Score
Grade your acne the way clinicians do — the GAGS system scores six face and trunk zones by worst lesion type, totalling to mild, moderate, severe, or very severe.
Eczema Control Test
Severity says how bad the week was; control says whether the disease is beaten. The 6-question ADCT tells you which side of the line you’re on — 7+ means it isn’t controlled.
MASI Calculator
The melasma severity index from the clinical literature: four face regions scored for area and darkness, so you can tell whether treatment is actually fading anything.
VASI Calculator
The vitiligo scoring index used in repigmentation trials — hand-unit areas times residual depigmentation per region, with a separate face score, tracked over months.
HS Severity Check
Recurrent boils in the armpits or groin have a name — hidradenitis suppurativa — and a staging system. Self-stage with Hurley and IHS4, and know when to push for treatment.
SALT Calculator
The alopecia areata measure from the JAK-inhibitor trials: score hair loss by scalp quadrant and get your 0–100 SALT — the number regrowth gets judged against.
Hair Loss Stages
Find your stage on the scales dermatologists actually use — Norwood for male-pattern, Ludwig for female-pattern — and what each stage means for treatment options.
Eczema Severity Score
The POEM questionnaire dermatology actually uses: seven questions about your last week, a 0–28 score, and a trend you can bring to appointments.
Itch Scale (0–10)
Rate your worst and average itch on the same 0–10 scale clinical trials use, log it daily, and see whether anything you change actually helps.
Hives Activity (UAS7)
The 7-day urticaria diary allergists work from: score wheals and itch daily, get your UAS7 out of 42, and know if treatment is actually controlling it.
Track & measure
Logs, diaries, and visit prepBSA Calculator
Paint the affected skin on a body map and get your body surface area percentage — the extent measure dermatologists use to grade psoriasis and eczema, with the severity bands built in.
Skin Flare Diary
Log severity, itch, triggers, and the products you used each day — see the trend and print a clean report for your dermatologist.
Progress Photo Tracker
Take consistent, comparable skin photos — prep checklist included — and compare any two dates side by side. Private to you, saved on your device.
Healing Tracker
A private daily log for a wound healing after a biopsy, excision, cryotherapy, peel or laser: pain, redness, drainage and care, with the common infection warning signs flagged and a report to print for the clinic.
Derm Visit Prep
Build a one-page brief for your appointment: symptom timeline, every product you use, and the questions worth asking — printable.
Every tool works without a sign-up: diaries, scores, patch tests, shelves, and your My Skin profile save right on this device — but browsers erase site data, and Safari does it automatically after seven days away. A free account is the fix: everything backs up automatically, photos included, and syncs to your other devices. We never sell or share any of it. (Prefer holding your own copy? Export and restore live in Your data and below.) Export everything as one file now and then, photos included, and restore it on any browser: the buttons are below, and the full inventory is in Your data. We never sell or share any of it.