There was a time when buying skincare was relatively straightforward.

Dry skin? Buy something with the word 'hydrate' in it.

Oily skin? Probably avoid anything too heavy. 

Sensitive? Try not to put anything on your face that makes it feel like it’s on fire.

Now, apparently, we can get a lab involved.

At-home skin tests are starting to offer a much more detailed look at what’s going on with our skin. Some involve taking a swab from your face, sending it away and getting information about your skin microbiome, with personalised skincare recommendations sometimes thrown in too.

And I’ll admit, I’d be curious.

If you offered to tell me exactly what was living on my face, obviously I’d want to know.

But would knowing actually change what I put on it?

That’s where things get a little less clear.

The testing itself is actually pretty clever

This isn't just someone looking at a selfie and deciding you look a bit dehydrated.

Researchers are genuinely able to analyse the microorganisms living on our skin.

And we've recently found that people don't necessarily need to visit a lab to collect a useful sample either.

A 2025 study compared skin microbiome samples people collected themselves at home with samples collected under supervision. The researchers found the at-home approach could produce comparable microbiome data.

So yes, you really can swab your face in your bathroom and send it off for analysis.

What that analysis can actually tell you about the moisturiser sitting in your Boots basket is another question.

Because what is “good skin” anyway?

This is probably where these tests become a little less straightforward.

Our skin microbiome varies from person to person and even from one part of our body to another.

Age, environment, the products we use and whether we have certain skin conditions can all influence what's living there.

Researchers have found differences in the skin microbiome in conditions such as acne and eczema too.

But we don't currently have one perfect microbiome that everyone's skin should look like.

Which makes things like a single “skin health” or “microbiome” score a little harder to interpret than they might first appear.

A result can tell us what was found in your sample.

Turning that into “therefore, this is the exact skincare routine you need” is a much bigger step.

But how useful are the recommendations?

This is probably the bit that matters most.

Getting loads of information about your skin is interesting, but ideally you want to know what you can actually do with it.

Some at-home tests use your results to suggest products or changes to your skincare routine, which could make choosing between the hundreds of products out there a little easier.

And personalised recommendations can absolutely be useful.

The question is how much we currently understand about the skin microbiome to make those recommendations genuinely specific to your results.

We’re still learning what a healthy skin microbiome looks like and how much it varies between people, so there’s a limit to what one swab can tell us right now.

That doesn’t make the testing pointless.

It just means I’d see it as another piece of information about your skin, rather than a definitive instruction manual for everything you should put on your face.

Your skin is already giving you quite a lot of information

There’s also the slightly less exciting option.

Pay attention to it.

If your face feels tight and uncomfortable after cleansing, maybe that cleanser isn't doing you any favours.

If a new serum makes your skin sting every single time you use it, perhaps stop using it. Even if Molly-Mae's told you it's cleared her skin right up.

And if the moisturiser you've used for the last two years leaves your skin feeling perfectly happy, you probably don't need a microbiome test to tell you it's doing its job.

Obviously, there are limits to this.

Persistent acne, eczema, rashes, irritation or anything else you're worried about deserves proper attention rather than another round of skincare trial and error.

An at-home test might give you some interesting information.

But it can't diagnose every reason your skin is unhappy.

Would I actually do one?

I probably would.

Mainly because I'm nosy, and I've always been focused on my skin since struggling with acne at such a young age.

I'd want to see the results. I'd then Google everything about them, and I'd almost certainly tell everyone what bacteria I'd apparently been carrying around on my face.

Would I then replace my entire skincare routine?

Probably not. 

And I think that's where these tests sit for me at the moment.

The technology is genuinely interesting, particularly for research. Being able to collect samples at home could make it much easier to study the skin microbiome in larger groups of people.

But we're very good at collecting information about ourselves now.

• Sleep scores.
• Blood glucose.
• Gut bacteria.
• Heart rate.

And now apparently the microorganisms on our cheeks.

The harder question is whether all that extra information actually gives us something useful to do.

With skin microbiome testing, we might eventually get to the point where a swab can genuinely help us choose much more personalised skincare.

We're just not quite there yet.

So if you're curious and fancy finding out what's living on your face, I completely get it.

But if your current skincare works?

I wouldn't throw it away just because a test has given your face a score. I'll be keeping that Nivea right where it is for now.

References

• Leng, J. et al. (2025) ‘At-home, self-sampling of the skin microbiome: development of an unsupervised sampling approach’, Access Microbiology, 7(8), 000991.v3.
• MacGibeny, M.A. et al. (2025) ‘The human skin microbiome in health’, Journal of the American Academy of Dermatology, 93(2), pp. 329–336.
• MacGibeny, M.A. et al. (2025) ‘The skin microbiome in dermatologic disease’, Journal of the American Academy of Dermatology, 93(2), pp. 339–348.
• Scharschmidt, T.C. and Segre, J.A. (2025) ‘Skin microbiome and dermatologic disorders’, Journal of Clinical Investigation, 135(3), e184315.
• Lee, C.H. et al. (2025) ‘Skin Microbiome Shifts in Various Dermatological Conditions’, Journal of Clinical Medicine, 14(17), 6137.