Skincare and makeup decoder

Your skin, decoded.

Search any skincare or makeup product, log how your skin reacted and finally see what keeps breaking you out.

Download on the App Store

Free forever. No account needed to start.

Patch checking the ingredients of a blush
Also in 2 products that didn't work
Stays on skin

How it works

From "why am I breaking out?" to "oh, that's why."

  1. 1

    Search a product

    See every ingredient explained in plain language, with honest evidence levels.

  2. 2

    Log how your skin reacted

    Worked, didn't work or not sure yet. Add a note so future you remembers.

  3. 3

    Patch spots the pattern

    It flags the ingredients your problem products have in common, every time you check something new.

History of logged products and reactions
Patch spotted a pattern
Diisostearyl Malate is also in 2 products you logged as didn't work

Features

Small app, big clarity

Everything you need to understand your skin. Nothing you don't.

Ingredient check for a blush

Ingredients, decoded

Every product broken down: what may clog pores, what may irritate and how strong the evidence really is.

Ingredient also found in products that didn't work

Your triggers, spotted

Patch remembers what didn't work and points out shared ingredients.

Vitamin C and niacinamide myth busted

Myths, busted

It tells you when a combination is fine, too.

Skin diary PDF preview

A skin diary for your derm

Share everything you've tried as one clean PDF.

Three layered products and the result: they may pill together

Layer with confidence

Catch pilling and real conflicts before they happen.

Private by default

No real names, just an anonymous username. Clear or delete your data anytime.

@DewyNova42

Free, always

Because skin health should be free for all

Every feature in Patch is free. No trials, no premium tier, nothing locked away. Just clearer answers about what you put on your skin.

Download on the App Store