Acne + Your Menstrual Cycle: why your skin may change throughout the month — and what those breakouts can actually tell us

If you’ve ever felt like your skincare is finally working and then suddenly broken out in the week before your period, you’re definitely not imagining the pattern. One of the first things many of our adult acne clients tell us in consultation is that their skin changes throughout their menstrual cycle. They might have relatively calm skin for part of the month and then, almost predictably, begin developing deeper or more inflammatory breakouts around the lower face as their period approaches.

It’s usually at this point that someone tells me, “I know my acne is hormonal.”

And they may absolutely be recognising a hormonal pattern. Hormones can influence acne, and fluctuations throughout the menstrual cycle can affect the processes involved in breakout formation. Where I think we need to be careful is making the leap from “my acne changes with my cycle” to “there must be something wrong with my hormones.”

Those aren't necessarily the same thing. Your menstrual cycle can give us useful context about your skin, but your face can't tell us your hormone levels. For me, understanding that distinction is one of the most important parts of talking responsibly about hormonal acne.

Why can acne change throughout your cycle?

Your menstrual cycle involves changing levels and relationships between hormones including oestrogen, progesterone and androgens. Those hormones have effects throughout the body, and the skin is no exception.

Androgens are particularly relevant to acne because they can influence sebaceous gland activity and sebum production. The relative hormonal environment changes throughout the menstrual cycle, which can help explain why some women notice their oil production, inflammation or breakouts changing at fairly predictable points each month.

The important thing to understand is that a breakout you see today didn't necessarily begin forming yesterday. Acne lesions develop through processes occurring within the follicle before they become visible at the surface. So when someone says, “I always break out right before my period,” we're not necessarily looking at something that suddenly appeared overnight because one hormone changed that morning.

We're looking at a condition developing within a biological system that is continually changing. That is one of the reasons I encourage clients to look for patterns over several cycles, rather than trying to analyse every individual breakout.

Does hormonal acne mean your hormones are imbalanced?

Not necessarily, and this is probably the biggest misconception I want to clear up. Adult women can experience acne even when circulating androgen levels are within normal ranges. The relationship between hormones and acne is more complicated than simply having “too much” or “too little” of one hormone, and the way the pilosebaceous unit responds to hormonal signalling can also be relevant.

This is why I'm careful with the phrase hormonal imbalance.

It's used so frequently online that it can start to sound like a diagnosis in itself. Someone develops jawline acne, sees three videos explaining that this means their hormones are imbalanced and suddenly they're buying supplements, cutting foods from their diet and organising tests without anyone having actually established that an endocrine abnormality exists.

There absolutely are situations where acne occurs alongside hormonal or endocrine conditions, and further medical assessment may be appropriate. But cyclical breakouts alone don't give us enough information to determine that.

Hormonal influence and hormonal abnormality are not the same thing. That distinction can save clients a lot of unnecessary worry — and sometimes a lot of unnecessary spending too.

What about chin and jawline acne?

The lower face, chin and jawline are commonly associated with adult female acne, and many women with cyclical breakouts notice lesions appearing predominantly in these areas.

But I don't use the location of a breakout as a diagnostic map of what's happening inside your body.

There is a lot of content online that essentially treats the face like a dashboard for your internal organs: forehead means one thing, cheeks mean another, chin means hormones and so on. While breakout distribution can absolutely be useful clinical information, we need to be careful about what conclusions we're drawing from it.

If you tell me you develop deeper inflammatory lesions around your chin and jaw at a similar point before every menstrual period, that pattern is relevant to your consultation. It doesn't allow me to look at your face and tell you exactly which hormone is “out of balance”.

Your skin gives us clues. Clues aren't the same as test results.

This is why we ask about more than your skincare

When someone comes to Curated with adult acne, I don't only want to know what cleanser they're using.

I want to understand when the acne started, how it behaves, whether there are predictable patterns, what you've already tried and what was happening around the time your skin changed. Your menstrual history may form part of that conversation because it can provide useful context.

We may also discuss relevant health history, medications, hormonal contraception and other changes where appropriate. The purpose isn't for us to diagnose an underlying medical condition from a skin consultation. It's to understand whether the information you're giving us changes how we should approach your skin or whether there is something that would be better investigated by another practitioner.

This is a really important part of staying within our scope. I think a good skin consultation should be thorough enough to recognise when something deserves further investigation, while also being humble enough to know when the answer needs to come from somewhere else.

When might further investigation be worth discussing?

There isn't one rule that says everyone with adult acne needs hormonal testing.

Whether medical investigation is appropriate depends on the individual history and whether there are other signs or symptoms that warrant it. That's a conversation to have with your GP or another appropriately qualified healthcare practitioner who can assess the bigger clinical picture and decide whether testing is indicated.

This is also why I'm cautious about telling every acne client that they need an enormous panel of hormone, gut or microbiome testing before we can help their skin. Sometimes further investigation is incredibly valuable. Sometimes it isn't necessary. And deciding which situation you're in requires more than looking at where you're breaking out.

At Curated, our role is to manage the parts of the skin journey that sit within our scope, recognise patterns that may be relevant and collaborate or refer when the bigger picture suggests that would be useful.

If hormones are influencing the acne, does topical skincare even matter?

Absolutely. This is another thing I think can become confusing once someone starts thinking about their acne as “internal”.

If hormones are influencing sebaceous activity and the environment in which acne develops, that doesn't mean nothing we do topically matters. Acne still involves processes occurring within the pilosebaceous unit — including keratinisation, sebum, C. acnes and inflammation — and appropriate topical treatment can influence those processes.

I sometimes see clients become so focused on finding the internal cause of their acne that they almost abandon the skin itself. The opposite can happen too. Someone repeatedly changes topical products while ignoring a history that suggests medical investigation might be worthwhile.

For me, neither extreme is particularly helpful.

Sometimes we need to support the skin topically while something internal is being investigated or medically managed. Sometimes the topical plan is the main intervention required. And sometimes we need several practitioners working within their respective scopes.

Internal and external aren't competing explanations. They can both be part of the same picture.

Should you change your skincare throughout your cycle?

For most people, I don't want their routine becoming so complicated that they need a calendar to work out which serum they're allowed to use on day seventeen.

There may be situations where we make small adjustments based on predictable changes in someone's skin, but the foundation of a good acne routine should generally be consistent enough to actually do its job.

If you know you're prone to breaking out before your period, waiting until three inflammatory lesions appear and then aggressively spot-treating them isn't necessarily the most useful strategy. We're interested in managing acne-prone skin over time rather than only reacting to individual breakouts once they're visible.

That means appropriate cleansing, moisturisation, sun protection and any targeted ingredients or prescribed treatments should sit within a longer-term plan. Your skin can fluctuate while the foundations remain consistent. That's an important distinction.

Track the pattern without becoming obsessed with it

If someone suspects their acne is strongly cyclical, I actually think tracking can be useful for a few months.

It doesn't need to become complicated. You can simply note where you are in your menstrual cycle, when significant breakouts occur and anything else that genuinely seems relevant. Taking consistent photographs can also be incredibly helpful because our memory of our skin isn't always very reliable.

What we're looking for is repetition.

Does the same thing happen at approximately the same point each month? Is there actually a cyclical pattern, or does the acne occur fairly consistently throughout the month? Has the pattern changed recently? Did the acne begin around another significant change?

The point isn't to analyse every pore. It's to gather enough information that we can make better decisions.

And sometimes tracking shows us something surprising. A client who was convinced she only broke out hormonally may realise she actually has persistent congestion throughout the month with an inflammatory flare premenstrually. That's a slightly different picture from skin that is otherwise consistently clear.

The more accurately we understand the pattern, the more considered the plan can become.

You don't need to fight your skin every month

I think recurring cyclical acne can be particularly exhausting because you start anticipating it. Your skin clears and instead of enjoying it, you're waiting for the week when you know everything is going to change again. It can feel as though you're starting from scratch every month.

But understanding that pattern can actually make the skin feel less unpredictable.

If we know your acne tends to fluctuate throughout your cycle, we can assess progress over a longer period rather than judging your entire skin journey by what it looks like in the five days before your period. We can create a consistent topical plan, look at whether the frequency or severity of those flares is changing and recognise when something outside our scope deserves further investigation.

The goal isn't necessarily to promise that your skin will look identical every single day of the month.

Skin isn't static, and hormones aren't static either. The goal is to understand what is normal for your skin, manage the processes we can influence and make sure we're asking the right questions when something changes.

Because noticing that your acne follows your menstrual cycle can be useful information. It just isn't the whole diagnosis.

— Shae
Founder & Dermal Clinician
Curated Skin Aesthetics