My Tracking Notes: How a Spreadsheet and a Chin-Selfie Folder Fixed My Face After Years of Failure

Side-by-side adult acne progress photos used for probiotic testing and supplement tracking as part of a gut-skin axis experiment

My boyfriend stopped mid-sentence outside a shop window on Mississippi Avenue, tilted his head, and said, "Wait, did something change? Your skin looks different." I hadn't mentioned the spreadsheet in weeks, hadn't brought up the probiotic testing or the folder of chin photos clogging my phone, and yet there it was — someone who wasn't staring at my jawline every morning noticed before I let myself trust the data. Seven weeks into tracking supplements against a decade of failed adult acne treatments, and roughly three years into taking the gut-skin axis seriously at all, that offhand comment on a sidewalk did more for my confidence than any serum ever managed.

Three years of testing supplements against a phone gallery that's mostly chin close-ups will do strange things to your sense of what counts as progress. I'm not a dermatologist and I'm not a nutritionist, and I want that on record before anything else — just someone who spent her twenties buying every acid and retinol on the shelf before a friend mentioned, almost in passing, that my skin might be reacting to something further down than another jar in my cabinet.

What My Supplement-Tracking Spreadsheet Actually Logs

The sheet is a little embarrassing to look at from the outside. There's a column for the strain — Lactobacillus rhamnosus, a couple of Bifidobacterium species, whatever the label lists — and one for the CFU count, because I wanted to know if a higher number actually meant fewer bumps along my jaw. There's a format column too, and it only ever says "capsule," since that's the one delivery method where I trust the potency printed on the label enough to bother logging it. A rotation column tracks whatever I'm cycling through, because I don't stay loyal to one brand long enough to call it a relationship. There's a bloating column, added after I noticed a puffy stomach and a puffy jawline kept showing up in the same week. And there's a hormonal-cycle column that exists because a reader named Pritha Langford messaged me after a piece I wrote about my retinol routine failing, asking how I could tell any of this was digestive instead of hormonal — a fair question I didn't have a column for until she asked it.

Probiotic supplement bottle kept cold in the fridge as part of a supplement-tracking routine for adult acne

Further along, there's a gap-tracking column for the weeks I ran out and didn't reorder in time, because what actually happens to your skin once you stop taking these things is its own data set I'm still filling in. A separate tab maps which zone of my face tends to flare with which digestive complaint, which is a whole project on its own and not one I can summarize in a paragraph here. Digestive enzymes get their own column too, kept apart from the probiotic strains, since they're solving a different problem and mixing them would have muddied everything. And then there's the photo column — a weekly link to whatever image I took that morning, which is how my phone ended up with a folder of over four hundred chin photos my boyfriend has learned not to scroll through by accident.

Prebiotics entered the spreadsheet a while after the probiotics did, mostly because I kept reading that the two aren't interchangeable — probiotics are the live cultures, prebiotics are closer to what feeds them — and I let myself read just far enough into the research on short-chain fatty acids to add a prebiotic-fiber column before I made myself stop, before it turned into a second spreadsheet tab.

My friend Tasha Orimoto, a fellow designer I've been comparing notes with for years, keeps a color-coded version of the same kind of sheet — hers might genuinely be more organized than mine, which is a strange thing to admit about something that started as a way to stop guessing. Neither of us set out to build a tracking system. It's just what happens when two people who spend their working hours in spreadsheets for clients start pointing that same instinct at their own faces.

Why the European Facial Set Me Back

None of this started with the spreadsheet, though. Before I trusted data over feelings, I tried an expensive European facial a colleague swore by — extractions, a peel, actives layered on top of each other that my skin had never seen before. It left me purging for three weeks straight, worse breakouts than the ones I'd booked the appointment to fix, and it's still the clearest example I have of a topical fix making things actively worse. I didn't book a professional facial again for over a year after that.

Smartphone skin close-up next to probiotic capsules used for gut-skin axis tracking notes

Seven Weeks In, Something Shifted

By week seven, the inflammation score I'd been assigning to my own weekly photos — a number I made up myself, for the record, with no scientific backing whatsoever — had dropped for three weeks running instead of bouncing around the way it had for the first month and a half. That's around when my boyfriend made the comment on Mississippi Avenue. It wasn't a single dramatic before-and-after. It was a slow, boring trend line, the kind that would put anyone to sleep in a client presentation, and it happened to be the most convincing evidence I'd collected in years of trying.

Hand holding a probiotic capsule during a morning supplement-tracking routine for adult acne

Track Before You Trust Any of This

For the longer, messier version of year one, I already wrote up The Spreadsheet Method: My Year Testing the Gut-Skin Axis After a Decade of Dead-End Creams. If there's one thing worth pulling from three years of this, though, it isn't which strain worked or which capsule brand I'd reorder — it's that a spreadsheet will tell you the truth a mirror won't. Feelings about your own skin are unreliable narrators; a photo taken at the same angle every week, filed next to a note about what you actually swallowed that day, is not. That's the whole method, stripped of the columns and the jargon: measure before you decide something worked, and don't trust a good week until it's shown up three times in a row.