SKIN LOGIC
Skin Logic is a Registered Nurse's clinical framework for skin that's been through something — GLP-1 weight loss, barrier damage, or the changes that come with 40+. Every reference page is built from primary research. Every journey post is a first-person account with dates and verified purchases. No sponsored fluff.
I've been a Registered Nurse since 2008. My background spans home acute care, long-term care, home health, and wound care, and I currently work as an intake coordinator for rehabilitation. Wound care in particular shaped the way I think about skin — as a barrier system with its own repair timeline, its own dependencies, and its own predictable ways of failing when the wrong things are done to it.
Skincare, for most of my career, wasn't something I applied that thinking to. My routine was basic and inconsistent, and I had never really given my skin much thought. Between a house fire, a new grandchild, kids in high school, and a generally chaotic stretch of years, my face was not high on the list. Then GLP-1 weight loss changed my skin in ways I couldn't keep ignoring, and I finally looked at what was happening the way I'd been trained to look at everything else.
What I found was that my skin barrier was damaged. Not dramatically, not visibly to anyone but me, but functionally. My skin stung around the nose. It felt tight after cleansing. Products I thought should work weren't working, and products that used to work no longer did. As a nurse — and especially as a nurse with wound care experience — I understood the clinical principle that damaged tissue needs protection before it can tolerate additional stress. I simply hadn't applied that reasoning to my face. Once I did, the order of treatment became obvious, and I started rebuilding — slowly, deliberately, one layer at a time.
Skin Logic is what came out of that rebuild.
It exists because most of what's written about skincare online is written by people selling something, and most of what isn't sponsored still wouldn't survive five minutes of clinical scrutiny. I wanted a place that took the science seriously and took the lived experience seriously, and refused to pretend they were separate things. Every reference page on this site is built from primary research, textbooks, and clinical guidelines. Every claim is either cited or softened until it's honest. Every journey post is a first-person account of my own skin — my routine, my medications, my mistakes — documented with dates and verified purchases so the story stays traceable.
The site is organized around the three questions I kept returning to.
- WRITTEN BY A REGISTERED NURSE with 18 years of clinical practice, including wound care.
- REFERENCE PAGES BUILT FROM PRIMARY RESEARCH, textbooks, and clinical guidelines.
- EVERY JOURNEY POST IS DATED AND SOURCED, with verified purchases, real products, and honest notes on what worked and what didn't.
- NO SPONSORED CONTENT DRESSED UP AS SCIENCE. No trend-chasing. Just skin biology, applied.
CHOOSE YOUR PATHWAY
BARRIER REPAIR
What it looks like when the skin barrier stops working, and what it actually takes to repair it. The most complete part of Skin Logic — with a running journey of what I tried and how the science explained both.
READ THE NURSE'S GUIDE →GLP SKIN
What happens to skin during and after weight loss on a GLP-1, and why so little of the standard skincare advice fits. GLP-1 skin isn't stable — especially in active loss — and the routine that fits it looks different.
READ THE NURSE'S GUIDE →MATURE SKIN 40+
What actually changes in skin after forty, and which interventions are worth the time, the cost, and the risk of irritation. Sits alongside Barrier Repair — because none of it works if the barrier isn't intact enough to accept it.
READ THE NURSE'S GUIDE →THE JOURNEY
Behind every reference page on this site is a real skin story — mine. The Journey is where it's kept: a running record of what my skin has looked like, what I've tried, what worked, what didn't, and how the research explained both.
The reference pages tell you what the science says. The Journey tells you what it looked like when one person actually lived it — with dates, product names, and verified purchases.
THE FOUNDATIONS
Every hub on this site pulls from three reference libraries you can also browse on their own. Skin Biology is the layer beneath everything — the structures, mechanisms, and biological processes that determine how skin behaves. Ingredients is the working catalog of what shows up in serums, moisturizers, cleansers, and treatments, along with what each one is actually doing when it lands on the skin. Product Guides is where those ingredients are translated into specific recommendations, with names, comparisons, and honest notes on what has and hasn't worked in my own routine.
WHERE SHOULD YOU START?
If your skin stings, burns, or flakes with basic products → The Nurse's Guide to Barrier Repair
If you're on a GLP-1 and your skin has changed → The Nurse's Guide to GLP Skin
If you're 40+ and your skin is behaving differently → The Nurse's Guide to Mature Skin 40+
If you want the full science library → Browse All Topics