- Androgens such as testosterone drive oil production, so skin gets oilier in the teens, under stress and, for oily types, in the week before a period.
- Water loss through the skin is higher just before a period, so skin can be shinier and more reactive at the same time.
- Oil changed little during pregnancy in a small study of 10 women but dropped noticeably after delivery.
- Around menopause, falling estrogen leaves skin drier, thinner and more sensitive; adult-onset acne is also most common then.
Hormones change skin type mostly by changing how much oil your skin makes and how well it holds water. Androgens such as testosterone push oil glands to produce more sebum, so skin tends to get oilier before a period and in the teens. Pregnancy can make skin oilier or drier, and oil output often drops after birth. Around menopause, falling estrogen leaves skin drier, thinner and more easily irritated.
Below we go through each stage: what the research has measured across the monthly cycle, during and after pregnancy, and around menopause, plus how androgens fit in. We keep this to how skin behaves and what that means for your skin type. If breakouts are your main problem, the treatment side lives in our guide to hormonal acne signs and causes.
How do hormones affect your skin type?
Hormones act on the two things that define skin type: oil and water. A review of hormonal acne treatment describes androgens as the most important hormones regulating sebum production, and notes that from puberty on they stimulate oil glands in both sexes, through potent androgens such as testosterone and dihydrotestosterone (DHT) as well as weaker ones. More sebum on the surface means more shine, which is what pushes skin toward the oily or combination end.
Estrogen works on the water side. A review in Dermato-Endocrinology explains that estrogens target keratinocytes, fibroblasts, melanocytes, hair follicles and sebaceous glands, and that when estrogen runs low, skin becomes thinner, less elastic and drier. So a drop in estrogen tends to push skin toward the dry end, even in someone who was oily for most of their life.
Two caveats run through everything below. First, most of these studies are small, and the size of the effect varies a lot between people. Second, hormones change how your skin behaves; they rarely turn it into something unrecognizable overnight. Most people see a familiar pattern get stronger or weaker, which is why it helps to know your baseline. If you haven't checked it recently, run a bare-face test first.
Does your skin change during your menstrual cycle?
Yes, for many people it does, and the clearest change is extra oil in the week before a period. Researchers who tracked oil output over three consecutive cycles found that women with oily skin produced the most sebum during the week before menstruation. Women whose skin made little oil showed no cyclic change at all.
That second finding is easy to miss and useful. If your skin is dry or normal to begin with, you may notice very little across the month. If you are already on the oily side, the premenstrual week can make you look oilier than your true type, and a skin type test taken that week will overstate it.
The barrier also seems to shift. A study of healthy women measured water loss through the skin at different points in the cycle and found it was higher on the day of lowest estrogen and progesterone than on the day of peak estrogen. The authors concluded that the skin barrier is less complete in the days just before a period than in the days just before ovulation. In practice, that can mean skin that is shinier and a little more reactive at the same time.
| Point in the cycle | What studies found | What you might notice |
|---|---|---|
| Days before ovulation (estrogen near its peak) | Lower water loss through the skin, suggesting a stronger barrier | Skin often feels at its most comfortable and even |
| Week before your period | Highest oil output in women with oily skin; higher water loss | More shine, more clogged pores, products may sting a little more |
| Throughout, if your skin makes little oil | No cyclic change in sebum measured | Little difference from week to week |
The practical rule is simple: run your skin type test in the first half of your cycle, and repeat it once more in a different week before deciding. Breakouts around that premenstrual week are a separate topic; we cover them in breakouts before your period.
Can pregnancy change your skin type?
Pregnancy can make skin behave differently, though the measured change in oil is smaller than many people expect. In a small study that tracked forehead oil in 10 women, sebum showed only minor fluctuations in the middle and last trimesters, then a pronounced decrease after delivery. The authors suspected that some hormone of pregnancy keeps oil glands running and that its removal explains the postpartum drop.
So the most measurable shift often comes after the birth: skin that was oily or normal can feel noticeably drier for a while postpartum. During pregnancy itself, the changes people report are more varied. The American Academy of Dermatology (AAD) lists pregnancy among the times when fluctuating hormones can lead to breakouts, and estrogen is linked to hyperpigmentation such as melasma during pregnancy. Beyond that, the research is thin, so the honest answer is that pregnancy can push your skin in either direction, and you won't know which until it happens.
What to keep in mind about products during pregnancy
If pregnancy shifts your skin type, you may want to change products, and this is where caution matters. The AAD says to stop isotretinoin, tazarotene and spironolactone immediately and not use them during pregnancy, because they can cause serious birth defects. On the same page, it describes azelaic acid as thought to be safe and benzoyl peroxide as safe in limited amounts, and it advises talking with your obstetrician before using acne treatments. For a full product-by-product approach, see our pregnancy-safe skincare routine, and check anything new with your doctor or midwife.
Why does skin get dry during menopause?
Skin gets drier around menopause mainly because estrogen falls and skin loses some of its ability to hold water. The AAD says that during menopause skin loses some ability to hold water and can get quite dry, especially when the air is dry. Estrogen research describes the same pattern from the other side: low estrogen leads to thinner skin with less collagen, less elasticity and increased dryness.
The structural change is large and fast. The AAD notes that women's skin loses about 30% of its collagen during the first five years of menopause, then about 2% a year for the next 20 years. Thinner skin with less collagen tends to feel tighter and looks more crepey, both classic features of a drier type.
Sensitivity often rises too. According to the AAD, around age 50 the skin's pH changes, and skin becomes more sensitive, with more rashes and easy irritation. Existing eczema or rosacea can get worse in this period. That's a good reason to see a dermatologist if redness or itching appears and doesn't settle with gentle care.
Can menopause make skin oily or spotty?
For some people, yes. As estrogen falls, the balance shifts toward androgens, and the AAD notes that adult-onset acne is most common among women going through menopause. So dry, thinner skin with breakouts is a real combination at this stage, and it calls for gentle acne care chosen with the dryness in mind.
What usually helps is changing texture and gentleness more than adding actives. The AAD suggests washing with a mild cleanser instead of soap and using a moisturizer with hyaluronic acid or glycerin, and switching to fragrance-free products if skin becomes easily irritated. We build a full plan in the menopause skincare routine.
Does testosterone make skin oily?
Yes. Testosterone and the stronger DHT made from it are the main signals that tell oil glands to grow and produce more sebum. The hormone review cited above notes that androgens stimulate sebum production in both sexes from puberty, and that DHT acts more selectively on the oil glands of the face than of the leg, which helps explain why oil and acne gather in certain areas such as the face.
A few everyday situations raise androgen activity enough to show up as shine:
- Puberty. Rising androgens are the main reason many people are oiliest in their teens.
- Stress. The AAD reports that in response to stress the body produces more androgens, which stimulate the oil glands.
- Starting or stopping hormonal birth control. The AAD lists discontinuing or starting birth control pills among the causes of fluctuating hormones that lead to adult breakouts.
- Conditions with high androgens. When oily skin comes with irregular periods, unwanted hair growth or acne that resists usual treatment, the same review recommends hormonal testing. See a doctor rather than treating it as a skin type problem.
If you start, stop or change any hormone treatment, watch your skin over the following weeks and talk to your prescriber if it changes sharply.
How do you find your real skin type when hormones keep changing it?
Test when your hormones are least likely to skew the result, and test more than once. A few habits make the answer more reliable:
- Pick your timing. If you have a cycle, test in the days after your period ends and before ovulation, then once more in a different week.
- Log the context. Write down where you are in your cycle, whether you're pregnant, postpartum or in perimenopause, and any medication changes. Our guide to tracking skin across your menstrual cycle shows how.
- Re-test after a big shift. After childbirth, after stopping breastfeeding, and when periods become irregular in your 40s, your old type may no longer apply.
- Change textures, not your whole routine. Moving from a gel to a cream moisturizer, or from a foaming to a creamy cleanser, is usually enough to follow a hormonal swing.
How can a selfie scan help you see hormonal patterns?
Hormonal changes repeat on a schedule, which makes them easier to see in a photo record than in a mirror. An app like Pori takes a selfie and returns an overall skin score from 0 to 100 with separate readings for Hydration & Moisture, Pores & Texture and Pigmentation & Tone. Scanning at the same points in your cycle, or monthly through perimenopause, lets you compare like with like. Pori's skin diary lets you log sleep, water, stress and diet next to each scan, and the ingredient scanner (Pro) flags each ingredient as beneficial, use with caution or avoid for your skin type when you try a new product.
An app is not a diagnosis. It can't tell you whether your hormones are out of range, whether a patch is melasma, or whether a product is safe in pregnancy, so see a doctor or dermatologist for those questions.
Frequently asked questions
Can hormones change your skin type?
Yes. Androgens raise oil production and falling estrogen makes skin drier, so skin can become oilier before a period or in the teens and drier after childbirth or around menopause. Most people see their usual type get stronger or weaker rather than flip completely.
Why is my skin oilier before my period?
In women with oily skin, studies have measured the highest sebum output during the week before menstruation. Water loss through the skin is also higher just before a period, so skin can be shinier and more reactive at once.
Does pregnancy make your skin dry or oily?
It can do either. A small study found only minor changes in oil during pregnancy and a pronounced drop after delivery, so many people notice drier skin postpartum.
Why is my skin so dry during menopause?
Falling estrogen reduces the skin's ability to hold water and speeds collagen loss. The AAD suggests a mild cleanser instead of soap and a moisturizer with hyaluronic acid or glycerin.
Does testosterone cause oily skin?
Yes. Testosterone and DHT are the main hormones that stimulate oil glands, in both sexes. Stress and starting or stopping hormonal birth control can also change androgen activity and shine.
When should I see a doctor about hormonal skin changes?
See a doctor if oily skin or acne comes with irregular periods, unwanted hair growth or treatment-resistant breakouts, or if redness and itching in menopause don't settle. Those can point to a hormonal condition or eczema or rosacea that needs proper care.
Sources
- Piérard-Franchimont C et al. Rhythm of sebum excretion during the menstrual cycle. Dermatologica, 1991 (PubMed)
- Harvell J et al. Changes in transepidermal water loss and cutaneous blood flow during the menstrual cycle. Contact Dermatitis, 1992 (PubMed)
- Burton JL et al. Effect of pregnancy on sebum excretion. Br Med J, 1970 (PubMed)
- Thornton MJ. Estrogens and aging skin. Dermatoendocrinol, 2013 (PMC)
- Elsaie ML. Hormonal treatment of acne vulgaris: an update. Clin Cosmet Investig Dermatol, 2016 (PMC)
- American Academy of Dermatology: Caring for your skin in menopause
- American Academy of Dermatology: Adult acne
- American Academy of Dermatology: Is any acne treatment safe to use during pregnancy?
Pori is a wellness and skincare education app, not a medical device. This article is for general information and isn't medical advice. For anything that worries you, see a dermatologist.



