SkincareSafety Guide

Skin

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

View all skin guides

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.

View concern guides

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.

View ingredient questions

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.

View routine questions

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.

View all products

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.

View learning guides

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.

Skin Condition Clarification

Is Melasma Hyperpigmentation? Understanding the Distinction and Why It Matters

The terms melasma and hyperpigmentation are often used interchangeably, but they're not quite the same thing. One is a specific condition; the other is a general category. Understanding the distinction matters - because treatment that works for one type of pigmentation can be wrong for another.

Quick answerYes, melasma is a type of hyperpigmentation - it involves excess melanin production leading to darkened skin.

Medically reviewed by Dermatology reviewer · Updated Jul 20, 2026 · 7 min read

Comparison of different types of pigmentation on skin - melasma, sunspots, and post-inflammatory hyperpigmentation
HyperpigmentationGeneral term for any darkening of the skin
MelasmaA specific type of hyperpigmentation
Key DifferenceCause, pattern, and treatment response
Melasma CausesHormones + UV + genetics
Other TypesSunspots, PIH, freckles

Key answer

Yes

Melasma is a type of hyperpigmentation, but it has distinct features that set it apart. The distinction matters because treatment and prognosis differ significantly from other types of pigmentation.

Evidence
Strong - Yes - but with important distinctions
Best for
Understanding the relationship between melasma and other pigmentation conditions; Clarifying why treatment approaches differ
Limitation
Self-diagnosis - see a dermatologist for an accurate classification

See what the evidence shows

Short version

Story in brief

Hyperpigmentation is a broad term that simply means "darker skin." It covers anything from a freckle to a sunspot to a scar that has left behind a brown mark. The underlying mechanism is always the same - excess melanin production or accumulation - but the causes, locations, and behavior are incredibly varied.

Melasma sits within this category, but it's a specific subtype with its own characteristics. Unlike a sunspot, which is caused solely by UV damage and appears as an isolated spot, melasma is driven by a combination of hormonal stimulation, UV exposure, and genetic predisposition. It appears in a distinctive pattern - bilateral and symmetrical on the face - and it's notoriously chronic and treatment-resistant.

The distinction isn't just academic. It determines treatment. Hydroquinone works for both melasma and sunspots, but the approach to each is different. Sunspots often respond to a single course of treatment; melasma requires ongoing maintenance. Post-inflammatory hyperpigmentation might be treated with gentle exfoliation, while melasma needs more aggressive intervention. Knowing which you have changes everything.

Mental model

Visual explanation

Evidence

What the evidence shows

The classification of melasma as a specific subtype of hyperpigmentation is well-established.

  • Clinical classification

    Well-established

  • Diagnostic criteria

    Clear and distinct

  • Treatment guidelines

    Different for different types

  • Patient understanding

    Often confused

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

    HyperpigmentationUse caution
    Fit signal
    Limited evidence

    General term for skin darkening

  • If your goal is

    MelasmaUse caution
    Fit signal
    Limited evidence

    Specific type of hyperpigmentation

  • If your goal is

    Key distinctionUsually relevant
    Fit signal
    Often useful

    Cause, pattern, treatment response

  • If your goal is

    Why it mattersUsually relevant
    Fit signal
    Often useful

    Different treatments for different types

Research notes already in this guide

  • Melasma is classified as a specific disorder of hyperpigmentation in dermatology.
  • The diagnostic criteria distinguish melasma from other pigmentation conditions.
  • Treatment guidelines separate melasma from other types of hyperpigmentation.
  • The distinction is clinically important for treatment selection and prognosis.

Explanation

How it works

The relationship between general and specific terms.

  1. Pigmentation

    Any skin color, normal or abnormal.

  2. Hyperpigmentation

    Abnormal darkening of the skin - the general category.

  3. Melasma

    A specific subtype of hyperpigmentation with distinct features.

  4. Other subtypes

    Sunspots, PIH, freckles, age spots - all hyperpigmentation, not melasma.

Practical use

How to use it

  1. Get an accurate diagnosis

    See a dermatologist to determine whether your pigmentation is melasma or another type of hyperpigmentation.

  2. Understand the type you have

    Treatment and prognosis depend on whether it's melasma, sunspots, PIH, or another condition.

  3. Follow the appropriate treatment path

    Different types of pigmentation respond to different treatments. Don't assume what works for one works for another.

  4. Use sunscreen regardless of the type

    All hyperpigmentation is worsened by UV exposure. Sun protection is universal.

Safety

Side effects and cautions

  • Calling all facial pigmentation "melasma"

    Facial pigmentation can be sunspots, PIH, freckles, or other conditions. Melasma is a specific diagnosis.

  • Treating melasma like sunspots

    Melasma requires a different approach, including ongoing maintenance and trigger management.

  • Assuming pigmentation that doesn't respond to treatment is "untreatable"

    It might be a different type of pigmentation that requires a different treatment approach.

Fit

Who should be careful

  • Self-diagnosis - see a dermatologist for an accurate classification

Helpful context

What else is worth knowing

For Your Situation

Which type of pigmentation do you have?

Understanding the type determines the approach.

Bilateral brown patches on cheeks and forehead

Consistent with melasma. See a dermatologist for confirmation.

Isolated brown spots on the hands or face

More consistent with sunspots. Still see a dermatologist for diagnosis.

Dark marks following acne, injury, or inflammation

Likely post-inflammatory hyperpigmentation. Different treatment approach.

Worth noting

Small details that can change the answer

  • The Umbrella. Hyperpigmentation covers any skin darkening, regardless of cause or pattern.
  • Melasma's Place. Melasma is a specific subtype of hyperpigmentation with distinct features.
  • Other Subtypes. Sunspots, PIH, freckles, and age spots are all hyperpigmentation - but not melasma.
  • Treatment Differences. Different types of hyperpigmentation respond to different treatment approaches.

Melasma is a type of hyperpigmentation - but not all hyperpigmentation is melasma.

Hyperpigmentation is the general term for any skin darkening.

Melasma is a specific condition with hormonal, UV, and genetic causes.

Other types of hyperpigmentation include sunspots, PIH, and freckles.

The distinction matters for treatment - what works for one type may not work for another.

Definition

What is hyperpigmentation?

Hyperpigmentation is a broad medical term for any area of skin that is darker than the surrounding skin. It occurs when melanocytes produce excess melanin, which then accumulates in the skin. The causes are diverse - UV exposure, inflammation, hormonal changes, injury, genetics - and so are the patterns and locations.

  • A general term for skin darkening from any cause
  • Caused by excess melanin production or accumulation
  • Includes many different subtypes and conditions
  • Can appear anywhere on the body
  • May be temporary or permanent

Definition

What is melasma?

Melasma is a specific subtype of hyperpigmentation characterized by brown to gray-brown patches on sun-exposed areas of the face. It is caused by a combination of hormonal stimulation (estrogen, progesterone), UV exposure, and genetic predisposition. It typically appears bilaterally and symmetrically on the cheeks, forehead, nose bridge, and upper lip.

  • A specific skin condition, not a general term
  • Hormonal, UV, and genetic drivers
  • Appears on the face in a symmetrical pattern
  • Chronic and relapsing
  • Affects up to 50-70% of pregnant women and 30% of birth control users

Explanation

Key differences between melasma and other hyperpigmentation

Melasma differs from other types of hyperpigmentation in cause, pattern, location, and behavior. Understanding these differences is essential for choosing the right treatment.

Melasma vs. other types of hyperpigmentation

Factor

Questions

Frequently asked questions

Is melasma hyperpigmentation?

Yes - melasma is a specific subtype of hyperpigmentation. It involves excess melanin production that darkens the skin.

Is melasma the same as hyperpigmentation?

Not exactly. Hyperpigmentation is the general category. Melasma is one specific condition within that category.

Is melasma and pigmentation the same thing?

"Pigmentation" is even broader than hyperpigmentation - it refers to any skin color, including normal skin color. Melasma is a specific disorder of pigmentation.

What's the difference between melasma and hyperpigmentation?

Hyperpigmentation is any skin darkening. Melasma is a specific type of hyperpigmentation with characteristic causes, patterns, and behavior.

References

Sources

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

  1. Melasma is classified as a specific disorder of hyperpigmentation in dermatology.
  2. The diagnostic criteria distinguish melasma from other pigmentation conditions.
  3. Treatment guidelines separate melasma from other types of hyperpigmentation.
  4. The distinction is clinically important for treatment selection and prognosis.