Almost everyone who tells me their skin is dry has told me the wrong thing. Not because they're wrong about how it feels — tight, flaky, uncomfortable, all of that is real — but because two quite different problems produce the same set of sensations, and they need opposite responses.
What dry actually means
Dry means there isn't enough oil. Your skin produces less sebum than it needs to stay comfortable, either because of genetics, or age, or the season, or because it's minus thirty and the air has nothing in it.
Dry skin is stable. That's the thing to notice. It was dry last week, it's dry today, it'll be dry tomorrow. It doesn't sting. It doesn't flare and calm and flare again. It tolerates products fine — it just needs more than it's making.
Dry skin responds well to adding oil. That's the entire fix, and it's why dry is the easy version of this problem.
What a damaged barrier means
Your skin barrier is the outermost layer — cells held together by a lipid matrix, doing one job: keeping water in and everything else out.
When it's compromised, water leaves faster than it's replaced. You can put oil on top of that all day and the underlying situation doesn't change, because the problem isn't a missing ingredient. The wall has gaps in it.
Damaged skin is reactive, and reactivity is the tell. It stings on products it used to tolerate. It flushes for no obvious reason. It breaks out somewhere it never used to. Things stop working — not gradually, but suddenly, and usually several things at once.
That last one is the pattern I see most. I had a long time customer reach out to say she was post-partum and our Copper that she had been using for a few years was now leaving her skin slightly red and irritated.
Nothing had changed about the product. What changed was her — hormones, sleep, the fact that her body was running repair processes on almost no resources. Her barrier was compromised, and a compromised barrier reacts to things it used to handle without noticing.
An active asks something of your skin. Not ingredients — work. It's an instruction to do more, and doing more requires a barrier with capacity to spare. When there isn't any, the instruction just registers as irritation.
So I told her to stop using it. Not forever — for now. Switch to something that asks nothing: Purist, or the Spruce Salve. Simple, nourishing, no demands. Go back to the Copper when she's sleeping well again.
Someone tells me their moisturizer stopped working, and their serum stopped working, and the thing they've used for four years stopped working. Four products don't all fail in the same month. The skin changed, not the products.
How to tell which one you have
Stability versus reactivity. That's the whole diagnostic.
If your skin is uncomfortable but predictable, it's dry. If it's uncomfortable and unpredictable — better some days, worse others, stinging on things that used to be fine — the barrier is compromised, and no amount of the right product will fix it while the thing damaging it is still happening.
What actually causes it
Almost always repeated inputs rather than one dramatic event. Over-cleansing. Water that's too hot. Actives used more often than the skin can recover from. Fragrance. Physical exfoliation. And underneath all of it, the ordinary stuff — bad sleep, high stress, not enough good light — which affects barrier repair the way it affects every other repair process in the body.
Notice that most of those are things people do because their skin is misbehaving. That's the loop. The skin acts up, you intervene harder, the intervention is the cause, the skin acts up more.
What damaged skin needs
Less. For longer than feels reasonable.
Two to four weeks of almost nothing — no soap please, ideally no makeup (if it's summer get yourself a gorgeous tan), one simple occlusive, and no actives at all.
Not because those ingredients are bad, but because every product is a variable, and a compromised barrier is already dealing with more variables than it can manage.
Two weeks feels like an eternity when your face hurts. It is also, reliably, faster than the alternative, which is another eight months of trying products.
This is not a good thing to sell, which is roughly why it doesn't get said. Nobody builds a launch around "stop buying things for a month". But it's the answer often enough that I'd rather say it and lose the sale.
xo Caitlin