Pregnancy triggers a surge in estrogen, progesterone, and other hormones that reshape nearly every organ in your body, and your skin, hair, and nails are no exception. Some of these changes are welcome (thicker hair, stronger nails), while others are less so (acne, stretch marks, dark patches). Most resolve on their own after delivery, though the timeline varies.
Skin Darkening and Melasma
Rising levels of estrogen and progesterone stimulate the cells that produce pigment in your skin. The most visible result is melasma: brown or grayish patches that typically appear on the cheeks, forehead, nose, and upper lip. It’s sometimes called “the mask of pregnancy” because of the pattern it creates across the face. Sun exposure makes it worse, so consistent sunscreen use is one of the most effective ways to limit it.
You may also notice the linea nigra, a dark vertical line running down the center of your abdomen. This line actually exists in most people before pregnancy (called the linea alba), but it darkens as pigment production ramps up. Other areas prone to darkening include the areolas, inner thighs, and armpits. The linea nigra fades gradually over several weeks to months after delivery as hormone levels normalize, though in some cases it doesn’t completely disappear or takes significantly longer.
Stretch Marks
Somewhere between 50% and 90% of pregnant women develop stretch marks, making them one of the most common skin changes of pregnancy. They typically appear on the abdomen, breasts, hips, and thighs during the second and third trimesters as the skin stretches rapidly.
Your risk depends heavily on genetics and age. Younger women are actually at higher risk, with one analysis finding that younger maternal age was the single most important predictor. A family history of stretch marks, higher pre-pregnancy weight, large abdominal circumference, and higher birth weight also increase the odds. The marks start out pink, red, or purple, then gradually fade to a lighter, silvery tone over the months and years after delivery. No cream or oil has been definitively proven to prevent them, though keeping skin moisturized can help with the itching that often accompanies stretching.
Acne and Oily Skin
Hormonal surges in the first trimester increase your skin’s production of natural oils, which is why pregnancy acne tends to peak early. If you make it through the first trimester without significant breakouts, you’re unlikely to develop unusual acne later in pregnancy. Women who had acne-prone skin before conceiving are more likely to experience flare-ups.
Managing pregnancy acne is tricky because several common acne treatments (like retinoids and certain oral medications) aren’t safe during pregnancy. Gentle cleansing and oil-free moisturizers are your safest first steps, and your provider can recommend specific treatments that are considered low-risk.
Spider Veins and Red Palms
Pregnancy increases blood volume by roughly 50%, and that extra circulation shows up on your skin. Spider angiomas, small red spots with thin lines radiating outward, develop in up to 67% of pregnant women, typically on the face, neck, arms, and chest. About 75% of these resolve after delivery without any treatment.
Palmar erythema, a persistent redness across the palms, is equally common, appearing in up to 67% of pregnant women. It’s more noticeable in people with lighter skin tones. Both conditions are caused by increased blood flow and elevated estrogen rather than any underlying problem, and both typically fade postpartum.
Skin Tags
Small, soft growths of skin often pop up during the second and third trimesters, especially in areas where skin rubs together: the neck, underarms, under the breasts, and groin folds. The likely culprits are a combination of hormones and friction. Leptin, a hormone produced by both maternal and fetal fat tissue, promotes the growth of skin cells and has been strongly correlated with the number of skin tags that develop. Estrogen may also play a role. Weight gain during pregnancy creates more skin-on-skin friction, which adds to the effect.
Skin tags are harmless and don’t need to be removed, but they can be irritated by clothing or jewelry. Some shrink or fall off on their own after delivery. If they persist and bother you, a dermatologist can remove them with a quick in-office procedure.
Thicker Hair During Pregnancy
Many women notice their hair looks fuller and thicker during pregnancy, and it’s not an illusion. Estrogen extends the growth phase of the hair cycle, keeping individual strands on your scalp longer than usual instead of shedding at their normal rate. The result is a net gain: less hair falling out each day means more hair on your head at any given time. Some women also notice faster hair growth. The texture can change too, becoming wavier, curlier, or straighter than usual.
The flip side is that the same hormones can increase hair growth in less welcome places. Fine hair on the face, abdomen, arms, and back is common and usually temporary.
Postpartum Hair Loss
The fuller hair of pregnancy comes with a catch. About three months after giving birth, all those strands that were held in the growth phase start shedding at once. This can look alarming: clumps in the shower drain, hair all over your pillow, noticeable thinning around the temples and hairline. The amount varies from person to person and depends on individual hormone levels and genetics.
This shedding typically resolves between 6 and 12 months postpartum as the hair cycle resets to its normal rhythm. It’s not true hair loss in the sense that follicles are damaged. Your hair is simply catching up on months of deferred shedding. No supplement or treatment speeds the process, but gentle styling (avoiding tight ponytails and heat tools) can minimize breakage while new growth fills in.
Nail Changes
Increased blood circulation and hormonal shifts affect your nails too, though the direction of change is unpredictable. Many women find their nails grow faster and feel stronger during pregnancy. Others experience the opposite: nails that become brittle, soft, or prone to peeling. Ridges across the nail surface and an increased tendency toward ingrown nails are also reported.
If your nails become fragile, keeping them trimmed short and wearing gloves for wet work (dishes, cleaning) can help prevent splitting. Biotin supplements are sometimes recommended for brittle nails outside of pregnancy, but talk to your provider before adding any supplement to your prenatal routine.
When Itching Signals Something More Serious
Mild itching is normal during pregnancy, particularly on the abdomen as the skin stretches. But intense itching, especially on the palms of your hands or soles of your feet, during the late second or third trimester can be a sign of intrahepatic cholestasis of pregnancy, a liver condition that affects bile flow. This condition carries real risks for the baby, including preterm birth and, at very high bile acid levels, stillbirth.
The distinguishing features are the location (palms and soles), the intensity (often worse at night and hard to ignore), and the absence of a visible rash. Diagnosis involves a blood test measuring bile acid levels and liver enzymes. The condition is treatable, and symptoms along with abnormal lab values typically resolve within one to two weeks after delivery, sometimes up to four weeks. If you develop persistent, severe itching in the third trimester, especially on your hands and feet, it warrants prompt evaluation.