Patch-Test & New Product Log

Three days on your arm before one day on your face, with the spacing between new products enforced rather than remembered.

Set your spacing rule once: the number of days you leave between introducing new products so that a reaction stays attributable to something. Then one row per new product, with the site picked from a list and Day 1, Day 2 and Day 3 logged from dropdowns. Anything other than Fine and the row says stop and reassess.

WHAT'S INSIDE

Dashboard - tested, cleared, reactions, and what the three days logged

Start Here - how the file works and which cells are yours

Patch Tests - one row per new product, where you actually log

THE PART NOBODY ELSE BUILDS

The spacing column catches the second new product arriving too soon after the first. That is the failure that wastes a month of everyone's time: two things introduced four days apart, skin objects, and now neither can be blamed or cleared. The sheet flags it while the second product is still in the box. What a reaction means is between you and your dermatologist; this file only ever reports what you logged.

WHAT YOU GET

Excel workbook (.xlsx)

Google Sheets template - one click to copy

Setup instructions (PDF)

Free updates for life

BEFORE YOU BUY

Works in Microsoft Excel 2016 and later, and in Google Sheets. It is a log with a spacing rule you set. It diagnoses nothing, recommends nothing, and gives no skincare or medical advice. Digital download, all sales final.