SkincareSafety Guide

Skin

Understand your skin type, tone, and what your skin is doing.

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Start here

Skin typesThe main skin types and how they differ.Find your skin typeA practical identification guide.What different skin types look likeVisual differences between common skin types.

Common skin questions

Oily skinWhat oily skin means and how to read it.Skin type changesHow skin type can shift over time.Skin type and ageHow visible aging differs by skin type.
Not sure where to start?Use the skin-type guide before choosing routines or ingredients.

Concerns

Start from a skin problem or visible change.

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Oil and acne

Why oily skin happensThe main drivers behind excess oil.Oily skin and acneHow oil can contribute to breakouts.Can oily skin cause acne?A direct answer to the oil-acne link.

Changes and warning signs

Stress and oily skinHow stress may affect oiliness.Dehydration and oilinessWhy skin can feel oily and dehydrated.Skin cancer signsVisual signs that need professional attention.
Looking for a solution?Start with what oily skin actually needs before adding stronger products.

Ingredients

Understand what ingredients do and whether they fit your skin.

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Explore ingredients

NiacinamideA practical ingredient overview.Vitamin C serumWho can use vitamin C and when to be careful.RetinolHow retinol fits different skin types.

Use safely

Salicylic acidWhere this acne-focused ingredient fits.Niacinamide for all skin typesSuitability across skin types.Ingredient comparisonsUse comparisons to avoid mismatched decisions.
Can my skin use this?Browse compatibility questions before adding a new active.

Routines

Turn skin information into daily decisions.

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Daily basics

Does every skin type need moisturizer?A basic routine decision.Does every skin type need sunscreen?Where SPF fits in daily care.What oily skin needsA simple care direction for oily skin.

Adjust over time

Skin changes with ageWhen your routine may need to change.Seasonal skin changesHow weather affects skin behavior.Korean skincare approachWhat is useful beneath the trend.
Starting from scratch?Begin with moisturizer, sunscreen, and one skin-specific need.

Products

A small selection of skincare products recommended by OuterDerm for simple, effective everyday routines.

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Recommended picks

Daily SunscreenDaily UV protection that has to be wearable enough to stick with.Azelaic AcidA focused 10% azelaic acid when uneven tone or blemish marks are the concern.Gentle CleanserComfortable cleansing when tight or squeaky skin is a warning sign.
Not sure where to start?Browse three carefully selected essentials, then ask on WhatsApp before you order.

Learn

Go deeper into skin science, myths, evidence, and safety.

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Hazardous ingredients

Safety hubStart with mercury, steroids, PPD and other hazardous substances.Ingredient safety indexBrowse Phase 1 and Phase 2 hazardous ingredients.Mercury in whitening creamsLabel names, Punjab alerts, and what to do now.

Product literacy

Product literacy hubHow to read labels, claims, and INCI lists before you buy.How to read an ingredient labelINCI order, Parfum, and missing-list red flags.Fragrance-free vs unscentedHow to verify a fragrance-free claim on the ingredient list.How to choose sunscreenBroad spectrum, wearability, and a readable pack — not a fairness claim.

Skin science

Skin color geneticsHow inherited traits shape skin color.Skin color typesHow skin tone is commonly grouped.Are skin types genetic?What genetics can and cannot explain.

Evidence and myths

Can all skin types tan?Tanning, risk, and skin type.Is oily skin good or bad?A balanced view of oily skin.Why Korean skin looks flawlessTrend claims translated into practical basics.
Want the evidence layer?Use why-guides when you want causes, mechanisms, and context.

Pregnancy & Skin Changes

Can Pregnancy Cause Hyperpigmentation?

You expected glowing skin during pregnancy. You didn't expect the brown patches that started appearing on your face. It's called melasma, and it's incredibly common.

Pregnancy does some remarkable things to your body. And one of them is that your skin starts to darken in places you didn't expect - on your face, your belly, and other surprising areas.

This isn't just a random change - it's a hormonal response that's been observed in pregnant women for centuries.

So can pregnancy cause hyperpigmentation?

Pregnancy hyperpigmentation is like a map of your hormones - the dark patches show where your body is responding to the extraordinary changes of creating a new life.

Quick answerYes, pregnancy very commonly causes hyperpigmentation.

Medically reviewed by Skin Editorial Team · Updated Jul 18, 2026 · 5 min read

Pregnancy melasma on face, the mask of pregnancy
Direct AnswerYes - very commonly
ConditionMelasma (mask of pregnancy)
MechanismHormonal stimulation of melanocytes
Prevalence50-70% of pregnant women
Key PointUsually fades after delivery

Key answer

Yes

Yes, pregnancy very commonly causes hyperpigmentation, including melasma, through hormonal stimulation of melanocytes.

Evidence
Strong - Yes - very common and expected
Best for
Pregnant women or those planning pregnancy
Limitation
Those needing active pigmentation treatment during pregnancy

See what the evidence shows

Short version

Story in brief

During pregnancy, estrogen and progesterone levels increase significantly. These hormones stimulate melanocytes - the pigment-producing cells in your skin - to produce more melanin. The result is patches of hyperpigmentation, particularly in areas that are already prone to pigmentation.

The face is the most common area, with melasma appearing as symmetrical brown patches on the cheeks, forehead, nose, and upper lip. The line from the navel to the pubic bone (linea nigra) often darkens, as do the nipples and areolas. Existing freckles and birthmarks may also darken.

UV exposure can make pregnancy pigmentation worse, as it adds an additional trigger to the hormonal one. While pregnancy pigmentation often fades after delivery, for some women it persists or even becomes a long-term condition.

Mental model

Visual explanation

Evidence

What the evidence shows

Pregnancy pigmentation is hormonal - it's triggered by estrogen and progesterone, which are at their peak during pregnancy. The same mechanisms that cause melasma also cause other pregnancy-related darkening.

Use this section to decide

Does this advice apply to me?

Find the concern or goal closest to yours, then use the fit signal to decide how much weight to give this guide.
Strong fit means the advice is central to that goal.Depends means formula, tolerance, or context matters more.Use caution means do not treat it as the main answer.

  • If your goal is

    Common?Use caution
    Fit signal
    Limited evidence

    50-70% of pregnancies

  • If your goal is

    Main typeUse caution
    Fit signal
    Limited evidence

    Melasma

  • If your goal is

    TriggerUse caution
    Fit signal
    Limited evidence

    Estrogen, progesterone

  • If your goal is

    RecoveryUsually relevant
    Fit signal
    Often useful

    Usually fades after birth

Research notes already in this guide

  • Studies confirm that estrogen and progesterone stimulate melanocyte activity.
  • Research shows that 50-70% of pregnant women develop some form of pigmentation.
  • UV exposure is the most significant modifiable risk factor.
  • Most pregnancy-related pigmentation fades within 6-12 months after delivery.

Explanation

How it works

The pathway from hormonal changes to dark spots.

  1. Hormonal changes begin

    Estrogen and progesterone levels rise during pregnancy.

  2. Melanocyte stimulation

    These hormones bind to melanocyte receptors, increasing melanin production.

  3. Pigment accumulation

    Excess melanin accumulates in specific areas of the skin.

  4. Visible darkening

    Brown patches appear on the face (melasma) and other areas.

Practical use

How to use it

  1. Protect your skin from UV exposure

    Use SPF 50+ daily, wear hats, and avoid peak sun hours.

  2. Use pregnancy-safe skincare

    Consult your doctor about pregnancy-safe brightening ingredients like vitamin C or niacinamide.

  3. Be patient after delivery

    Most pigmentation fades gradually after childbirth.

Safety

Side effects and cautions

  • Assuming pregnancy pigmentation is permanent

    Most fades after delivery, though some may persist.

  • Not using sun protection during pregnancy

    Sun exposure significantly worsens melasma - use SPF daily.

  • Using aggressive treatments during pregnancy

    Many brightening agents aren't safe during pregnancy - consult your doctor.

Fit

Who should be careful

  • Those needing active pigmentation treatment during pregnancy

Worth noting

Small details that can change the answer

  • Melasma Prevalence. 50-70% of pregnant women develop melasma.
  • Hormonal Trigger. Estrogen and progesterone stimulate melanocytes.
  • Common Areas. Face, abdomen, nipples, and existing spots.
  • UV Worsening. Sun exposure can significantly darken pigmentation.

Pregnancy commonly causes hyperpigmentation, including melasma (50-70% of pregnancies).

Hormonal changes (estrogen and progesterone) stimulate melanocyte activity.

UV exposure worsens pregnancy pigmentation significantly.

Most pigmentation fades after delivery, but some may persist.

Consult your doctor before using any pigmentation treatments during pregnancy.

Definition

Types of pregnancy hyperpigmentation

Pregnancy pigmentation can appear in several forms.

  • Melasma (mask of pregnancy): Symmetrical brown patches on the face - cheeks, forehead, nose, and upper lip
  • Linea nigra: A dark line extending from the navel to the pubic bone
  • Darkened nipples and areolas: The breasts' response to hormonal changes
  • Darkening of existing spots: Freckles, birthmarks, and scars may darken
  • Post-inflammatory hyperpigmentation: Existing skin conditions may worsen

Risks

Who is most likely to develop pregnancy pigmentation?

Not all pregnant women get melasma, but certain factors increase the risk.

  • Fitzpatrick skin types III-VI (more reactive melanocytes)
  • Women with a history of melasma (especially with birth control pills)
  • Women with a family history of melasma
  • Women with significant sun exposure during pregnancy
  • Women with darker hair and eyes (indicating higher melanin activity)

Questions

Frequently asked questions

Does pregnancy hyperpigmentation go away?

It usually fades within 6-12 months after delivery, but some may persist.

Can I treat melasma during pregnancy?

Only with pregnancy-safe ingredients - consult your doctor first.

Will pregnancy pigmentation come back with future pregnancies?

It often does - the hormonal pattern is likely to repeat.

Does breastfeeding affect hyperpigmentation?

Hormonal changes during breastfeeding can sometimes cause pigmentation to persist.

References

Sources

The notes below are drawn from the evidence already cited in this guide. They are not a complete bibliography.

  1. Studies confirm that estrogen and progesterone stimulate melanocyte activity.
  2. Research shows that 50-70% of pregnant women develop some form of pigmentation.
  3. UV exposure is the most significant modifiable risk factor.
  4. Most pregnancy-related pigmentation fades within 6-12 months after delivery.