Pregnancy Glow: The Science + Why Not Everyone Gets It

You've probably heard forever that pregnant women "glow." Maybe someone told you as soon as they found out you were pregnant. Maybe you've been staring in the mirror wondering when your turn is. Or maybe you feel like you look worse than you have in a decade and are wondering if something's wrong. Good news: pregnancy glow is real, and so is not having it. Here's what's actually happening under your skin.

This guide covers the actual biology of pregnancy glow, why some people get it and others don't, when it typically appears, the flip side (why some pregnancies produce skin problems instead), practical skincare during pregnancy, and how to think about this whole topic without stress.

Quick note upfront: this is educational, not medical advice. For personal skincare during pregnancy, your doctor or dermatologist is the right resource. We build Vyve, a private, on-device AI cycle and pregnancy tracker — so consider the source.

What is pregnancy glow?

"Pregnancy glow" is a cultural shorthand for a set of visible skin changes some pregnant people experience — a warmer, more flushed complexion, slightly plumper-looking skin, and a subtle sheen. It's often described as looking radiant, well-rested, or even "lit from within."

It's not a made-up thing — the physiological changes behind it are real. It's just not universal, and it's often oversold. Some pregnancies look glowing; others don't; both are normal.

The science: what's happening in your skin

Several real changes contribute to the pregnancy glow:

1. Massively increased blood volume. Blood volume increases by up to 50% during pregnancy to support you and the growing baby. That means more blood flowing to the skin, giving cheeks a flushed appearance and generally warming the complexion.

2. Hormone-driven oil production. Estrogen and progesterone influence the sebaceous glands in your skin. For some people, this results in a healthy, dewy sheen. For others, the same hormones trigger the acne breakouts we'll talk about below.

3. Water retention. Pregnancy causes fluid retention, which can plump the skin and reduce the appearance of fine lines. Some people find their skin looks smoother and fuller.

4. Increased skin cell turnover. Faster cell turnover can create a slightly fresher, brighter appearance.

5. Pigmentation changes. Melanocyte-stimulating hormone rises during pregnancy, increasing pigment production. In moderation this can add warmth and glow; in excess it produces melasma (see below).

6. Feeling good. Many people feel physically better in the second trimester — nausea has usually passed, energy has often returned, the baby is felt for the first time. Feeling well shows on your face.

When it appears

If pregnancy glow appears at all, it's most often noticed in the second trimester — around weeks 13 to 26. Reasons this timing makes sense:

• First-trimester nausea and exhaustion have usually eased.
• Blood volume has significantly increased.
• Hormone levels are steadier than the wild first-trimester surges.
• You're often feeling more like yourself.

Third trimester can be a different story — swelling, fatigue, sleep disruption, and general end-of-pregnancy discomfort often dim the glow, and skin may look tired again.

When you don't glow — and it's fine

If you're pregnant and reading this thinking "I look terrible, when does the glow start?" — you are in very good company. Here's the truth: the same hormonal shifts that create glow in some people cause skin problems in others.

Common not-glowy experiences:

• Acne. Increased oil production plus hormonal shifts can trigger breakouts, sometimes worse than teen acne. Very common in the first trimester.
• Melasma / chloasma. Dark patches on the face (the "mask of pregnancy"), driven by the same pigment-increasing hormones that create linea nigra.
• Dry, itchy skin. As skin stretches and hormones shift, dryness and itching can appear.
• Dullness and puffiness. Fluid retention and disrupted sleep can produce a puffy, tired appearance rather than a radiant one.
• Rosacea flare-ups or worsening of existing skin conditions.
• Sensitivity to products you previously tolerated well.

None of this means you're doing pregnancy wrong. It's just biology.

Other pregnancy skin changes

Beyond glow-vs-not, pregnancy brings a wide range of skin changes:

• Linea nigra — the dark line down the belly. See our linea nigra guide.
• Darkening of nipples and areolas.
• Stretch marks. See our stretch marks guide.
• Spider veins and varicose veins from increased blood volume.
• Skin tags in areas of friction.
• Darkening of moles and freckles.
• Changes in hair and nails — often thicker or faster-growing during pregnancy, sometimes shedding postpartum.

Skincare during pregnancy

A gentle, straightforward approach works for most people:

• Cleanse gently. Mild cleanser, not harsh scrubs.
• Moisturize. Combats dryness and can help with itch.
• Sunscreen daily. Especially important because pregnancy skin is more prone to pigmentation. Physical (mineral) sunscreens with zinc oxide or titanium dioxide are widely considered safe.
• Hydrate. Adequate water intake supports skin from the inside.
• Sleep when you can. Skin repair happens overnight.

Ingredients to avoid during pregnancy

Some skincare ingredients aren't recommended during pregnancy. Always double-check with your doctor, but commonly flagged:

• Retinoids (retinol, tretinoin, adapalene, isotretinoin) — particularly oral retinoids, but topical ones too. Discuss any exceptions with your dermatologist.
• High-strength salicylic acid — especially in peels. Low-concentration leave-on products are less clear.
• Hydroquinone.
• Certain essential oils in high concentrations.
• Formaldehyde (found in some hair-straightening products).

This isn't a complete list — always check ingredients with your doctor or pharmacist if you're unsure.

What happens to your skin postpartum

After delivery, hormones crash back toward baseline. This can produce its own set of skin changes:

• Melasma often fades but sometimes persists.
• Linea nigra typically fades over months.
• Postpartum hair shedding is very common a few months after birth (this catches many people off guard — it's temporary).
• Postpartum acne can flare in some people as hormones readjust.
• Stretch marks fade in color but the texture change usually stays.

Pregnancy glow myths

• "Pregnancy glow means you're having a girl." No — no evidence.
• "Not glowing means something's wrong." No — plenty of healthy pregnancies produce zero glow.
• "You should stop all skincare during pregnancy." No — you should adjust it, not stop entirely.
• "Glow is proof you're doing everything right." No — it's mostly genetics and biology.

When to see a doctor

See a clinician or dermatologist during pregnancy if:

• You have severe, painful, or widespread rashes.
• You develop intense, persistent itching (especially of the palms and soles) — this can suggest a liver condition specific to pregnancy called cholestasis and needs prompt evaluation.
• You notice new or changing moles.
• You have severe acne that bothers you — some safe-in-pregnancy options exist.
• Any skin change that concerns you.

Frequently asked questions

What causes the pregnancy glow?

A combination of increased blood volume, extra blood flow to the skin, hormone-driven oil production, water retention, and pigmentation changes. Together these can produce the classic radiant look.

Why don't I have pregnancy glow?

You're not alone. The same hormonal shifts that produce glow in some people cause acne, dryness, melasma, or dullness in others. It says nothing about your pregnancy.

When does the pregnancy glow start?

If it appears, most often in the second trimester — weeks 13 to 26 — when many people feel better and blood volume is significantly increased.

Is pregnancy glow a sign of a healthy pregnancy?

No. Its presence or absence says nothing about the health of your pregnancy.

How can I care for my skin during pregnancy?

Gentle basics: mild cleanser, moisturizer, daily sunscreen, hydration. Avoid retinoids, hydroquinone, high-strength salicylic acid, and certain other ingredients. Check with your doctor for any specific concerns.

Disclaimer: This article is educational, not medical advice. For personal skin concerns during pregnancy, please consult your doctor or dermatologist.