Skin Microbiome vs Gut Microbiome: Why Treating One Won't Fix the Other

Most people treat "the microbiome" like it's one system. It's not.

Your skin microbiome and your gut microbiome are two separate ecosystems, shaped by completely different inputs, and treating one won't automatically fix the other. In this episode, I break down why your skin bacteria and gut bacteria aren't interchangeable, how the two systems actually communicate through immune signaling and inflammation, and why "probiotic skincare" and "gut health probiotics" are solving for two entirely different problems.

If you've been doing everything right, the topical routine, the supplement, and still not seeing your skin change, this episode explains why.

Transcript

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A client came to me a few months back. Let's call her Mira. Okay. So Mira was doing everything right. She had switched to a probiotic cleanser because she was having severe breakouts. Also, she was taking probiotic supplements every morning because both her aesthetician and her wellness guru told her that if she takes all of these things, it would balance her gut. But you know the surprising part? Three months later, Mira was still breaking out. So she came to me, she sat across from me and said the thing I hear more than almost anything else. Hey Salmeen, I don't understand. I did the right thing. Why didn't it work? And today in this episode, I'm gonna tell you what happened with Mira and why it didn't work for her. Hi, I'm Salmeen, and this is my podcast, Skin Barrier and Beyond, where I talk about gut, nervous system, and skin. So if you are new to here, welcome to the space. Now see, most people think of the microbiome as one thing, and they think that it's one ecosystem living somewhere in your body that you either feed right or feed wrong. Which means that most of the people think that skin microbiome and gut microbiome are the same thing, and if you fix one, you fix another. Now, as a gut health specialist and as an aesthetician, let me tell you one thing. Both of these things, the skin and gut microbiome, are not one thing. You have a skin microbiome, you have a gut microbiome. They are not the same bacteria and they do not respond to the same inputs. So it means that fixing one does not automatically fix the other. And this confusion costs a lot, and I get a lot of clients who come to me with the same complaint. I am taking probiotic, my skin is not getting better, I'm using probiotic serum, my skin is not getting better. It's always the same thing. And I get it, like it's so confusing because we preach that if you fix your internal gut microbiome, you fix your external skin microbiome. And there are like tons of marketing doing out there which claim that if you are taking probiotic, you are automatically getting a good skin, which is true to some extent. But when you have cases like Mira, which are extreme skins like Mira, which have been having breakouts for years, it's not like black and white. It's not like you take some random probiotic and you are getting the benefits in skin. It's not like that. You have to have a systematic approach and you cannot just blindly follow stuff. So let's get specific, okay, what Mira is doing wrong and why it's so confusing, because this is where it actually clicks. Listen to me. Your skin microbiome lives on the surface. Think Cudobacterium acnes, Staphylococcus epidermidis. These bacteria are shaped by things like overcleansing, Hirsch actives, and pH disruption because these bacteria are related to your skin microbiome and the environment externally happening around them. That's surface level, contact-based ecosystem. On the other hand, your gut microbiome, it lives inside you, in your digestive tract. It's shaped by your diet, stress, sleep, medication history. Yes, you are using a probiotic cleanser, but it's not going there. Skin doesn't work like that. It has totally different inputs. Why it's getting so confusing? Because here's the part most content you see, like most of those marketing content that claims that taking probiotic saves your skin skips, is that these two systems don't operate in isolation. Now you might be thinking, okay, so why is it so confusing? Because I have seen that people claiming they have taken probiotic and their skin got better. Yeah. Yeah, I'm getting into it. Although these two microbiome systems are operating differently, but the part most people forget to mention is that they're constantly in communication, and that is the crucial part. What I mean is that your skin microbiome or the ecosystem going around your skin talks to the ecosystem going around your gut. They talk to each other almost every day. Not directly, not like they're calling or texting, like you're texting your friend, but through your immune system and through inflammatory signaling. So what I am trying to mean is that when your gut barrier gets compromised, what's sometimes called increased permeability, your immune system reacts. And that reaction can make your acne worse, and that reaction can make your skin more sensitive. So that pattern is often generalized in a way that seems like okay, you take probiotic and you get a good skin, but things are not as simple as that. Because when you have a leaky gut, when you have an inflamed gut barrier, that reaction doesn't stay in your gut. It travels and inflammatory cytokines show up in your skin as redness, breakouts, and barrier dysfunction. So, yeah, a lot of stuff that you see on the internet or on the marketing things that claim that take probiotic, you will have clear skin, all of these things stem from this concept, but people don't talk about it in a more layered way, instead, they talk about it in a more simple way, which makes things more confusing and it backfires most of the time for people like Mira. Not only your gut and your skin always communicating, there's also a communication pathway involved with your nervous system, with your vagus nerve, which helps carry signals between your gut and your brain and plays a role in whether that inflammation, which is happening all around your body, gets tiled up or down. Like this is more confusing, that's a deeper topic for another day. For now, just notice. Your gut and your skin are in constant conversation. Okay, yeah, both of them are operating individually, but they are in conversation, so you have to make sure the pathway in which they're conversing together with each other is a good one. It's not like if you have one side better, the other side gets better. It's like you have to fix both sides so that the communication is better and overall things are getting better as well, like your breakout sensitivity and your bloating and your digestive system, nervous system, everything. So now you might be thinking, okay, we have had enough theory. What actually works? I mean, I'm getting into it. So if I were Mira, or if Mira were my clients, which she was, how would I have handled the stuff? First, I'll tell her that go internally. Okay, that means that understanding what's actually happening in your gut, because from there you start. Okay, that's your starting point, your gut. And when I'm talking about your gut, guessing sometimes it's not helpful. Sometimes you have to go through pattern recognition, sometimes you have to go through lap test. It depends on your case. For extreme cases like Mira, I would always suggest that you do the lap test, you do the gut permeability test, the inflammation test, which I do in my clinic when I am assessing a client, because guessing uh with your digestive system sometimes backfires, and I don't want to take that risk. So, first you fix your gut with a lab-based testing and supplementing and fixing your diet, your stress, your lifestyle, then you go externally. Means then you go to your skin microbiome. Because once the internal driver is addressed, like your topical routine, your barrier support, your skin microbiome care, actually has something to work with instead of fighting an internal fire, it can't reach. Because if there is a fire inside and you're putting water on top, it's not gonna help, right? You understand the concept. And that's not eradication. You are not trying to wipe anything out, you're trying to restore balance to two connected but distinct ecosystems in the sequence that actually makes sense. So, yeah, first you heal your gut, then you go to your skin and you respect both of these ecosystems individually, but keep in mind that they're always communicating with each other, so the communication pathways have to be stronger and solid. If you are confused and if you have been doing all the things and still not seeing your skin change, you might be treating the wrong system or treating both systems with no real map of what's happening in either one. If this sounds like you, that's exactly what the Agnium method in my cleaning is built to identify. If you're curious what's actually going on beneath the surface, both surfaces, both in your skin and gut, I'll leave the link to book a discovery call with me. So that's it, I'll see you in my next one. Until then, ciao.