The Real Reason Seborrheic Keratoses Keep Coming Back — And Why Nobody Told You This Before
“It’s just the nature of them.” Here’s what that sentence leaves out about seborrheic keratoses that keep coming back — and what changed for the women who found out.
She’d had hundreds removed. She had hundreds left.
I started looking into this after a reader wrote to me. I’ll call her Ruth.
She’d been living with seborrheic keratoses — the flat, cornflake-ish ones and the harder, warty ones that cluster across the back, chest, neck and sides — for eleven years. In that time she’d had hundreds removed. Cryotherapy at $250 a group. A course of IPL. And in between appointments, everything the internet suggests: wart remover from the pharmacy, medical freeze spray from Amazon, apple cider vinegar on a cotton pad held down with a bandaid overnight.
“More arriving every day,” she wrote. “I’ve been told it’s just the nature of them. I want to understand if that’s actually true or if there’s something I’m missing.”
I’d heard versions of that question before. This time I decided to actually answer it.
I expected the answer to be complicated. It isn’t. It’s simple, it’s specific, and as far as I can tell, nobody had told these women.
“I’ve stopped asking my dermatologist. I already know what she’ll say.”
Ruth first noticed them on her back about eleven years ago. One. Then a few. Then she stopped counting and started photographing instead — phone out, twisted round in the mirror every few weeks, trying to line the shot up with the last one.
Somewhere in there, without deciding to, she stopped wearing anything sleeveless. Then anything with a scoop neck. Not out of sadness, she said. Just quiet habit.
She did the sensible thing. She went to a dermatologist. Twenty seconds of looking: seborrheic keratoses, completely benign, nothing to worry about. A cluster frozen off. $250. They were back within weeks, and where they’d been there were pale patches now — hypopigmentation, the white marks cryotherapy sometimes leaves. She’d traded brown spots for white ones.
She went back. Three sessions in eighteen months. Every session felt like progress; every follow-up photo showed more than she’d started with.
At the last one she asked the question she’d emailed me. Her dermatologist nodded, not unkindly. “They do tend to recur. It’s really just the nature of them.”
“I sat in my car afterwards and just — stared. I’d spent over a thousand dollars to temporarily remove things that were going to come back while new ones arrived in the meantime. And the best answer available was to keep doing that.”
“I’ve stopped asking my dermatologist,” she said. “I already know what she’ll say.”
Ruth isn’t unusual. When I asked other readers, I heard the same story with the details swapped.
“I can look at my left side alone and count close to a hundred. My back must have several hundred more. I tried wart remover from the pharmacy. The fumes were so bad I could feel them in my lungs through a mask. The ones I managed to treat came back within weeks, sometimes darker.”
“The thing nobody prepares you for isn’t the first one. It’s the feeling that once they start, nothing stops them. Like your skin has switched something on you can’t switch back off. Doctors ask if I spent a lot of time in the sun. I have hundreds on skin that has never seen the sun in my life.”
What strikes me across these accounts isn’t the frustration, though that’s there. It’s the resignation. Every one of these women did the sensible things. They went to dermatologists. They paid for professional treatment. They researched, experimented, were consistent. And every one of them arrived at the conclusion their doctor handed them.
It’s just the nature of them.
I wanted to know whether that was the end of the story — or just the end of what removal could offer.
They aren’t dark spots. They’re buildup.
To understand why they keep coming back, you have to be clear about what they are, because most of the treatments people reach for are treating something else.
Seborrheic keratoses aren’t a pigment problem. That’s why the pigment tools — IPL, lasers — only ever half-work on them. And they aren’t warts or moles, individual objects you take off.
They’re buildup. Keratin — the same structural protein in your fingernails and in the outer layer of your skin — being produced by the top layer faster than that layer can shed it. It accumulates. It hardens. It sticks. A little, and you get the flat, cornflake-ish ones. Stacked up over months, you get the thick, waxy, warty ones.
They aren’t sitting on the skin. They are the skin, hardened into something the skin’s own shedding can’t get through.
And the part “just the nature of them” leaves out: the production doesn’t pause between appointments. It’s not an event. It’s a process. Ruth’s skin had made hundreds over eleven years, roughly one every few days, whether she had a session booked or not.
Calling them “spots” is the first thing that sends people to the wrong treatments. Spots you remove. Buildup you have to keep clearing.
Everything you’ve tried has been answering the wrong question.
The reason “it’s just the nature of them” feels so final is that it’s answering the question everyone has been asking: how do I remove what’s already here?
That’s not the question that matters.
The question that matters is: why does nothing stay in contact with them long enough to change them — and why is everything I’ve tried built for one at a time?
Look at the drawer of things Ruth had tried through that lens.
Cryotherapy and cautery genuinely destroy the growth. But they’re an event, a few dozen growths, every few months — against a process that runs every day. They do nothing to the skin around each one that’s still building up. Back within weeks, plus a white mark for the trouble.
IPL — the same, with more coverage per session and more money per session. Still an event.
Wart remover and freeze spray — one growth at a time, for as long as you can stand at the mirror with the fumes.
Creams, serums, pads, vinegar — applied to the surface of a hardened growth and absorbed into the skin around it, or rubbed off on clothing, within a minute or two.
Two failures, repeated across everything on the list. Either it treats one at a time, or it’s gone in a minute.
Glycolic acid loosens the bonds between hardened skin cells. Salicylic acid works its way into keratin. Both facts are decades old. But they need hours against the growth, not seconds — and almost no format they come in provides that.
It’s not the wrong chemistry. It’s the wrong delivery.
Nothing you’ve used has ever stayed long enough to work.
Here’s the piece almost nobody in the skincare conversation names out loud.
Contact time. The amount of time an active ingredient spends actually touching what it’s meant to be working on.
A cream applied to a hardened growth and absorbed into the surrounding skin in sixty seconds has had almost no contact with the growth itself. A wash is gone immediately. A toner on a pad, the same. Even a wart pen — strong as it is — is wet for about half a minute, on one spot.
Softening hardened keratin takes hours of contact. Every other day. Across the whole area, not a dozen at a time. You can’t do it in sixty seconds, and you can’t do it to three hundred growths one at a time.
Nobody had told Ruth that. So she’d spent eleven years and over a thousand dollars applying the right ingredients in formats that never gave them the time — or the coverage — to do anything.
What if it simply stayed on?
When I asked Ruth what had eventually changed, she said the same thing the other women did: the answer came sideways. A neighbour who’d stopped wearing high necklines. A sister-in-law who works in a dermatology practice and said, almost in passing, “you need a leave-on format, not a cream.” A forum post at 11pm that finally explained the contact-time problem in plain words.
The idea, once you see it, is almost embarrassingly simple.
Take the two acids that already work on keratin. Put them at a strength that matters for body skin, not a face. Hold them in a base that doesn’t absorb — so instead of vanishing into the surrounding skin in a minute, they sit against the growths for hours. Make it something you can glide across a whole back in under a minute, every other day, at home.
Not burning. Not freezing. Not one at a time. Just the right chemistry, finally left in place long enough to do what it does.
Three things happen when you do that, in the order the women described them. The flat ones thin and lift first. The thick ones soften at the edges and gradually rub down. And the new ones — because you’re there every other day instead of every few months — never get the time to stack into what you’ve been living with.
It isn’t a new ingredient. It’s an ingredient finally given the time to work.
Smooth & Even Glycolic Body Stick
7% glycolic acid — loosens the bonds holding hardened keratin together at the surface, across every inch it touches. A working strength for body skin, not the 2% of a face pad.
0.5% salicylic acid — oil-soluble, so rather than sitting on top it works down into the growth and loosens it from underneath.
10% shea butter — the reason it can do what creams can’t. A cream is built to absorb, and takes its acids with it. Shea butter sits. It holds both acids against the growths for hours, and it protects the normal skin in between — which is what makes every-other-day use across a whole back tolerable for skin that’s already been through cryo and pens.
The format is a solid stick. One swipe covers a strip the width of your hand. Back, neck, chest, sides, arms — the whole area in under a minute. Left on. Not rinsed, not wiped.
A few things readers ask me, answered plainly. It tingles a little the first few times, then settles; if it’s more than that, go to every third day for a fortnight. There are no fumes, no freezing, no scabbing, no wound. You don’t need an appointment for each growth — you apply it at home, across everything at once, which is something no removal session can offer, because removal treats one spot and this treats the whole area.
“The reason I kept dismissing topicals was that nothing ever stayed on long enough to do anything. A serum disappears in minutes. A wash is gone immediately. This stays.”
What actually happened.
None of the women I spoke to described an overnight transformation. What they described was slower, more specific, and — I’d argue — more believable than any dramatic before-and-after.
“Day five, I ran my finger over the flat ones on my chest and they felt different. Less raised. I did it again just to check. By the second week the edges on the thick ones had softened. Around day ten I realised at breakfast that I hadn’t done the morning check. New ones still come — that really is the nature of them — but they come up small and flat, and I deal with them the same week instead of saving them up for an appointment. I haven’t booked one in four months. I’m not cured. I never expected to be. But for the first time in eleven years I’m not losing ground.”
“I’d had hundreds removed and had hundreds still there. The thing that surprised me was the white marks — no new ones, because I wasn’t freezing anything anymore. Two months in, the flat ones are mostly gone and the raised ones on my sides are flatter. I keep pace with them now instead of storing them up.”
“Someone close to me noticed the ones on my chest had changed before I’d said anything. They’d seen my skin for years. That was when I knew something had actually shifted.”
These aren’t miracles. They’re slow, real changes. And for someone who has spent a decade watching the count climb while paying to bring it down, that difference is everything.
You have two options in front of you.
Keep managing them as they come.
Another session. Another $250 for a few dozen that come back within the month, and a few more white marks for the collection. Another photo every few weeks, craned round in the mirror. Another appointment where someone tells you it’s just the nature of them. There is no shame in this. It’s what most people do, because it’s what they were told to do. But now you know why it never gets ahead.
Treat them for what they are.
Buildup, not spots. Something that needs hours of contact, across the whole area, every other day — not seconds of contact, one at a time, four times a year. Not another cream that’s gone in a minute. Not another expensive appointment. An approach that works at the level where the growth actually lives, on your own time, across every area at once.
And if you’re thinking it might be too late for you — that you have too many, or they’ve been there too long — I want to be clear. It isn’t. The women with the heaviest coverage were the ones who had the most to gain from treating all of them at once instead of a dozen at a time. Thicker, older growths have simply had longer to build, so they take longer to soften. Having a lot of them isn’t a reason this won’t work. It’s the reason nothing else did.
Don’t substitute.
Every week a reader tells me she’s going to “try something similar first” — a glycolic face pad, a wart pen, an exfoliating body wash. Please don’t. A 2% face pad isn’t a lower dose of this; it’s a different product, sized for a face, wiped off in seconds. A wart pen is one spot for thirty seconds. A wash is gone before it’s done anything. You’ll spend two months proving what you already know, and the count will keep climbing while you do.
The only reason I felt comfortable pointing readers to this at all is the guarantee: sixty days, full refund if you don’t see it. That’s long enough to take a photo on day one and a photo on day sixty — you’ve been taking them anyway.
Treat them for what they truly are.
An approach that works at the level where the growth actually lives, on your own time, across every area.
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