Hair Changes in Early Pregnancy

Hair changes are a common early pregnancy sign, thanks to shifting hormones. Many people notice thicker, fuller hair, while others experience dryness or unwanted growth in new places. These changes are temporary and usually settle after birth. Here is what is happening, what to expect, and when (if ever) to mention it to your midwife.

Why Hair Changes in Pregnancy
Common Hair Changes
Hair Changes and Gender Prediction
Looking After Your Hair in Pregnancy
When to Mention Hair Changes to Your Midwife
FAQ

Why Hair Changes in Pregnancy

The main driver of pregnancy hair changes is oestrogen. Rising oestrogen levels extend the anagen (growing) phase of the hair cycle and slow the telogen (shedding) phase. In practical terms, this means far fewer hairs fall out each day than usual. Because the normal daily shedding slows to a trickle, hair accumulates on your head and often feels noticeably thicker and fuller within the first trimester.

Progesterone also plays a role. It can stimulate follicles in new areas of the body, which is why some people notice darker or more noticeable hair on the face, abdomen, or chest during pregnancy. Increased blood flow to the scalp may also encourage growth.

These are normal, healthy hormonal responses — your hair is not changing because anything is wrong.

Common Hair Changes

**Thicker, fuller scalp hair** is the most widely reported change. Many people enjoy this side effect and feel their hair is the best it has ever looked during pregnancy.

Changes in texture or curl are also common. Straight hair can develop a wave; previously curly hair sometimes relaxes. This is thought to be due to hormonal effects on the shape of the follicle opening. The change is usually temporary.

Oilier or drier scalp can occur as sebum production shifts. If your scalp becomes oilier, washing more frequently with a gentle shampoo is perfectly fine. If it becomes dry or flaky, a moisturising or anti-dandruff shampoo can help.

Increased body and facial hair — the same slowed-shedding effect applies across the body. Some people notice darker hairs on the upper lip, chin, abdomen (contributing to the linea nigra area), or breasts. This tends to be mild and resolves after birth.

Postpartum hair loss — it is worth knowing now that the fuller hair of pregnancy does not last forever. After birth, oestrogen drops sharply and all the hairs that were held in the growing phase begin shedding at once. This postpartum shedding usually peaks around three to four months after birth and can feel alarming, but it is normal and temporary. Hair typically returns to its pre-pregnancy thickness within six to twelve months.

Hair Changes and Gender Prediction

You may have heard the old wives' tale that thicker, glossier hair means a boy, or that dull, limp hair signals a girl (or vice versa — the tales contradict each other, depending on who you ask). There is no scientific basis for linking hair changes to your baby's sex. All pregnant people experience the same hormonal shifts regardless of whether they are carrying a boy or a girl.

If you are curious about your baby's sex, the 20-week anatomy scan may reveal it if your baby is in the right position, or you could look into private early gender scans. Hair texture is not a reliable guide.

Looking After Your Hair in Pregnancy

A few simple steps help keep your hair in good condition during pregnancy:

Gentle handling — avoid tight hairstyles that put traction on the roots, particularly if you notice any areas of thinning
Mild, sulphate-free shampoos work well if your scalp is sensitive or your hair has changed texture
Heat styling is generally fine in moderation; use a heat protector and avoid very high temperatures close to the scalp
Hair colouring — most evidence suggests that hair dye is unlikely to cause harm after the first trimester, when the baby's major organs are formed. Ensure good ventilation and consider asking your hairdresser about ammonia-free or low-chemical alternatives. Always let your hairdresser know you are pregnant
Nutrition — a balanced diet with adequate iron, protein, and folate supports healthy hair growth throughout pregnancy and beyond

When to Mention Hair Changes to Your Midwife

Most pregnancy hair changes are cosmetic and need no medical attention. However, speak to your GP or midwife if you notice:

Significant patchy hair loss or bald patches (which can sometimes indicate conditions such as alopecia areata or thyroid dysfunction, both of which can flare in pregnancy)
Hair loss accompanied by other symptoms such as extreme fatigue, feeling very cold, or unexplained weight changes (possible thyroid issues)
Very rapid or coarse new facial hair growth (which can occasionally be linked to hormonal conditions worth investigating)

Frequently Asked Questions

### Will my hair go back to normal after pregnancy?

Yes, for the vast majority of people. Postpartum shedding usually peaks around three to four months after birth and then gradually slows. Most people find their hair returns to its pre-pregnancy thickness and texture within six to twelve months. Eating well and being gentle with your hair during the shedding phase helps. If hair loss continues beyond twelve months postpartum, speak to your GP.

Is noticeable hair growth a reliable sign of pregnancy?

It can be one early sign, but it is far from definitive. Many factors affect hair — stress, diet, seasonal changes, and hormonal fluctuations unrelated to pregnancy all play a role. A missed period combined with a positive pregnancy test is a much more reliable indicator. Hair changes alone should not be used to confirm or rule out pregnancy.

Can I dye or bleach my hair during pregnancy?

Most evidence suggests that the chemicals in standard hair dyes are not absorbed in significant quantities through the scalp and are unlikely to harm your baby, particularly after the first trimester. Many people choose to wait until after twelve weeks as a precaution. If you do colour your hair, ensure good ventilation, wear gloves, and avoid leaving the product on longer than directed. Highlights or balayage techniques that keep the dye off the scalp are another option to discuss with your hairdresser. Always check with your midwife if you are unsure.

Your midwife or GP is your best point of contact for any concerns about changes to your body during pregnancy — there is no such thing as a silly question.

This article is for informational purposes only and does not constitute medical advice.

Related articles: