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 Types & Identification

What Do Different Skin Types Look Like?

You can't always tell what your skin type is from how it feels, but you can often tell from how it looks. Each skin type leaves a visual signature that's surprisingly consistent.

Quick answerOily skin looks shiny and slick, with visible, often enlarged pores.

Medically reviewed by Dermatology reviewer · Updated Jul 18, 2026 · 5 min read

Four close-up images showing different skin types side by side
Skin TypesOily, dry, combination, normal
Oily LookShiny, visible pores
Dry LookDull, flaky, rough texture
Combination LookShiny T-zone, dry cheeks
Normal LookEven, balanced, comfortable

Key answer

Look for the visual signs

Visual clues are reliable indicators when used consistently.

Evidence
Moderate - Look for the visual signs
Best for
Visual identification of skin type
Limitation
Relying solely on how skin feels

See what the evidence shows

Short version

Story in brief

The way your skin looks is a direct reflection of how much sebum it produces and how well it retains moisture. Oily skin produces more sebum, giving it a shiny, almost wet appearance. Dry skin produces less sebum, leading to a dull, matte surface that may feel rough and look flaky.

Combination skin is a hybrid: the sebaceous glands in the T-zone are more active, so that area looks oilier and has more visible pores, while the cheeks look and feel like dry or normal skin. Normal skin is the balanced middle - not shiny, not dull, with pores that are visible but not prominent.

It's worth noting that skin type isn't always consistent across the face. Many people have combination skin without realizing it, and skin type can shift with age, climate, and hormonal changes. The visible signs are the best guide.

Mental model

Visual explanation

Evidence

What the evidence shows

Skin type is not a fixed identity - it can change with climate, age, and lifestyle. But at any given moment, your skin type leaves a visible fingerprint that's distinct from other types.

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

    Shine levelPersonal response varies
    Fit signal
    Less predictable

    Oily: high, Dry: low

  • If your goal is

    Pore visibilityDepends
    Fit signal
    Possible fit

    Oily: prominent, Dry: refined

  • If your goal is

    Texture evennessUse caution
    Fit signal
    Limited evidence

    Normal: even, Dry: uneven

Expected results

Results and timeframe

Oily skin looks shiny with visible, enlarged pores.

Skin type can change over time and with seasons.

Practical use

How to use it

  1. Observe your skin without makeup

    Look at your bare skin in natural light after washing.

  2. Assess your T-zone separately from cheeks

    Look for differences in shine, pore size, and texture.

  3. Choose products based on what you see

    Match your skincare to your actual skin type, not the one you wish you had.

Safety

Side effects and cautions

  • Assuming skin type never changes

    Skin type can shift with age, climate, and seasons.

  • Using the wrong products based on a mis-identification

    Take the time to accurately identify your skin type.

  • Treating combination skin as either oily or dry

    Combination skin needs a dual approach.

Fit

Who should be careful

  • Relying solely on how skin feels

Helpful context

What else is worth knowing

Who Is This Guide For?

Perfect for skin detectives

If you're trying to figure out your skin type, this is for you.

The Observer

You like understanding things by looking at them. This visual guide is your starting point.

The Skincare Newbie

You're not sure what you have. Use this guide to get started.

Worth noting

Small details that can change the answer

  • Oily Pores. Oily skin tends to have more visible pores because of the larger sebaceous glands.
  • Dry Flakes. Dry skin often shows visible flaking or scaling, especially after cleansing.
  • Combination Pattern. Combination skin is the most common skin type, with a distinct oil-dry pattern.
  • Normal Sheen. Normal skin has a healthy, subtle sheen without looking greasy or dull.

Dry skin looks dull, rough, and may show flaking.

Combination skin is shiny in the T-zone and drier on the cheeks.

Normal skin looks balanced and even with refined pores.

Definition

Oily skin - the shiny look

Oily skin has a distinctive appearance: it looks shiny, especially in the T-zone, with a slick surface that reflects light. Pores appear larger and more visible, often with a pitted texture. The skin may look thicker and more resilient than other types. It's often described as looking "wet" or "glassy."

Definition

Dry skin - the dull look

Dry skin looks matte, sometimes bordering on dull. The surface may appear rough or uneven, with visible flaking or scaling. Skin may look thinner, with more visible fine lines. It can have a slightly grey or sallow appearance, especially in winter.

Definition

Combination skin - the split look

Combination skin shows the characteristics of both oily and dry skin. The T-zone (forehead, nose, chin) looks shiny, with visible pores and potentially some congestion. The cheeks and eye area look drier, sometimes dull, and may show tightness or flaking.

Definition

Normal skin - the balanced look

Normal skin appears even and balanced. It has a natural, healthy sheen but isn't greasy or dull. Pores are refined and visible but not prominent. It looks comfortable and hydrated without obvious problems in any area.

Questions

Frequently asked questions

Can you have more than one skin type?

Yes - combination skin combines oily and dry areas.

Does skin type affect aging?

Yes - oily skin tends to show fine lines later, while dry skin may age more visibly.

Can skincare change my skin type?

Skincare can't fundamentally change your genetics, but it can help balance your skin.

Should I treat my skin the same in all seasons?

No - skin types can shift with climate, so adjust your routine seasonally.