You catch your reflection in the car mirror at a red light, and there they are again: soft brown patches blooming across your cheeks and upper lip. They seem to deepen every summer. If you have been quietly wondering what is going on with your skin, you are in good company, and there are gentle answers waiting for you.
⏱️ 7-minute read · Words by Chiara Ugozzoli · Updated June 2026
TLDR: Melasma is a common pattern of brown or grey-brown patches, usually on the face, that tends to flare with hormonal shifts and sunlight. It is harmless, it is very treatable, and the single most powerful habit you can build is daily, generous sun protection. Read on for the why and the how.
What exactly is melasma?
Melasma shows up as patches of colour that are deeper than your natural skin tone, often spread in a fairly even, blotchy way across the cheeks, forehead, bridge of the nose, and above the lip. Many women first spot it during pregnancy, which is why it carries the old nickname “the mask of pregnancy.”
Here is what is happening underneath. The cells that give your skin its colour are called melanocytes, and they produce a pigment called melanin. According to the American Academy of Dermatology (AAD), when someone has melasma, these pigment cells tend to be more active and seem to go into overdrive when something triggers them. The result is extra colour deposited in the skin, gathering into those familiar soft patches.
It helps to know that melasma is purely cosmetic. It causes you zero physical harm. The frustration it brings is emotional, and that feeling is valid, so let us look at what sets it off.
Why do hormones play such a big role?
Melasma and hormones are deeply intertwined, which is one reason it appears so often in women. The AAD explains that an increase in the hormones estrogen and progesterone, of the kind that happens during pregnancy, is thought to trigger melasma in some people. That is the pregnancy connection in a single sentence.
Pregnancy is just one chapter. Hormonal contraception such as the birth control pill can act as a trigger too, and the same goes for some other medications. The AAD lists oral contraceptive pills among the medicines that may set off melasma, alongside certain anti-seizure drugs and medications that make skin more sensitive to sunlight. If you started a new pill and noticed patches arriving soon after, that timing may be meaningful, and it is worth a calm chat with your doctor or pharmacist.
Age and family history matter as well. The AAD notes that melasma is much more common in women than in men, and that it appears most often in women between the ages of 20 and 40. There is a genetic thread too: in one global study of 324 people with melasma, the AAD reports that 48% said they had a blood relative who also had melasma. So if your mother or sister has the same soft patches, your skin is simply following a familiar family script.
Picture this. You are six months pregnant, glowing in the way everyone keeps telling you about, and one morning you notice a faint shadow across your top lip that was absent a few weeks ago. It is melasma saying hello, nudged along by the hormonal tide of pregnancy. For many women, this kind of melasma fades on its own after the baby arrives, as the AAD describes. Knowing that can turn a moment of worry into a moment of patience.
How does sunlight make it worse?
If hormones load the gun, sunlight often pulls the trigger. The AAD describes how, when sunlight reaches your skin, it prompts the body to produce more melanin. That is precisely why melasma tends to settle on the areas that catch the most light: the face, the neck, the arms. It also explains the maddening seasonal rhythm so many women describe, where patches fade a little over winter and return with force once the brighter months arrive.
Sunlight covers more than the burning rays you feel. Heat and visible light play a part too, and tanning beds deserve a wide berth, since the AAD notes that a tanning bed or sunlamp tends to produce stronger ultraviolet (UV) rays than sunlight. For skin that is prone to pigment, that concentrated dose is the opposite of helpful.
There is a hopeful flip side here. Because light is such a strong driver, sun protection becomes your most reliable everyday tool, and it sits entirely in your hands.
Who tends to get melasma?
Melasma can appear on any skin, and it shows a clear preference for some. The AAD explains that it develops more frequently in medium and dark skin tones than in lighter ones, and that you are more likely to develop it if you are a woman of Latin, Asian, Black, or Native American heritage. This is reassuring to understand, far from alarming: it means your skin is rich in active pigment cells, which is part of what gives deeper skin tones their natural protection and glow.
The reason a trigger sparks melasma in one woman while leaving another untouched is still being mapped out, and researchers are honest that more study is welcome. What stands clear is the cluster of patterns: female, aged roughly 20 to 40, medium to deeper skin tone, often with a relative who has it too.
What gentle habits actually help?
Daily sun protection is the foundation, full stop. The UK’s National Health Service (NHS) advises choosing a sunscreen with a sun protection factor (SPF) of at least 30 plus at least 4-star UVA protection, and reapplying generously and frequently. The NHS also points out that most people apply far too little, suggesting around 6 to 8 teaspoons to cover the whole body, and a top-up roughly every two hours when you are out. In the UK the sun sits at its strongest between 11am and 3pm from March to October, so seek shade and a wide-brimmed hat during those hours.
A few more soothing, broadcast-safe habits worth weaving in:
- Make sunscreen the last step of your morning, every single day, winter included, since visible light reaches you even on grey days.
- Reach for a wide-brimmed hat and sunglasses as your stylish second layer of defence.
- Treat new pigment with patience. When melasma is linked to pregnancy or a medication, it often eases once that chapter closes.
- Talk to a professional before trying strong lightening products. A pharmacist or doctor can guide you toward options suited to your skin tone, which matters, because deeper skin can react to harsh ingredients.
Real women find real comfort in small, named tools. Some keep a tinted mineral SPF on the bathroom shelf so colour and protection happen in one swipe. Others book a winter holiday and pack the hat first. These are gentle, doable moves, and they add up.
Try this tonight: Lay out tomorrow’s sun-protection kit before bed, the way you would lay out a gym outfit. Pop your SPF 30+ broad-spectrum sunscreen and your sunglasses by the front door, and tuck a hat beside them. When morning rushes in, the choice is already made for you, and your skin gets its protection on the days that matter most: the ordinary ones.
When is it time to see someone?
Melasma is harmless, so seeing a professional is about your peace of mind and your options. If the patches bother you, a dermatologist can talk through treatments, and the AAD notes that many advances have been made in recent years. Bring along the timeline of when you noticed changes and any new medications or pills, since that story helps enormously.
One gentle caution: some skin changes that look like a flat brown patch deserve a closer look to rule out anything else. If a spot is changing in size, shape, or colour, or if it stands apart from your usual pattern, have it checked. Quick reassurance is always worth the appointment.
The gentle takeaway
Those soft patches on your cheeks are common, harmless, and closely tied to the hormonal seasons of a woman’s life, with sunlight turning up the volume. You hold a great deal of influence here, mostly through the quiet daily ritual of sun protection and a little patience with the chapters that pass. Be kind to the face in the mirror. It is carrying you through a lot, and it deserves gentle, informed care free of judgement.
PrettyWell is a women’s lifestyle and wellbeing magazine. This article shares general information and wellbeing perspectives to help you ask better questions and feel more in charge; for anything about your own health, please speak with a qualified healthcare professional.
References
- American Academy of Dermatology. “Melasma: Causes.” https://www.aad.org/public/diseases/a-z/melasma-causes
- NHS. “Sunscreen and sun safety.” https://www.nhs.uk/live-well/seasonal-health/sunscreen-and-sun-safety/
