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.

Preservative allergens family

Methylisothiazolinone (MIT)

Allergy caution

Check for MIT on labels if isothiazolinone allergy is known.

Main concern: Contact dermatitis guidance includes cosmetic preservatives as common sensitiser categories.

Do now: Stop suspected products and compare ingredient lists on wet wipes and hair care.

Moderate severityModerate confidenceModerate confidence evidence

Last reviewed 17 Aug 2026

Label par naam check karein Agar use kar chuke hain Evidence aur sources dekhein
Moderate confidence1 source Reviewed 17 Aug 2026OuterDerm fact-check deskModerate confidence · 1 source(s) on file Evidence aur sources dekhein
What it isA isothiazolinone preservative used to prevent bacterial growth in water-based cosmetics.
Where foundShampoo · Conditioner · Ingredient lists ending in isothiazolinone · Baby wipes (check label)
Main concernContact dermatitis guidance includes cosmetic preservatives as common sensitiser categories.
What to doStop suspected products and compare ingredient lists on wet wipes and hair care.

ExplainWhat the substance is

A isothiazolinone preservative used to prevent bacterial growth in water-based cosmetics.

MIT kai shampoos, wipes aur creams mein labeled preservative hai. Agar pehle is family se reaction hui ho to ingredient list check karein.

LabelsLabel par naam check karein

MITinciMethylisothiazolinoneinciMIlabel name
Scientific / common name
Methylisothiazolinone (MIT)
Short name
MIT

WhereWhere it may be found

Not every product in these categories contains this substance. These are common contexts where exposure has been documented or reported.

Common product categories

  • Shampoo
  • Conditioner
  • Wet wipes
  • Leave-on lotion

Typical exposure contexts

  • Ingredient lists ending in isothiazolinone
  • Baby wipes (check label)

Main exposure route: Skin contact — leave-on products prolong exposure

Why it appears in products
  • Broad-spectrum preservation in water-based formulas

If usedAgar use kar chuke hain

  • Stop suspected product
  • Save ingredient photo
  • See clinician if rash persists

OuterDerm does not diagnose reactions or prescribe treatment. Use professional care when symptoms concern you.

Report a suspected product

RiskWhen it becomes risky

  • Leave-on wet wipes on face
  • Damaged eczema skin
  • Repeated exposure without gloves in cleaning work

HealthHealth effects by evidence strength

strong evidence

  • Contact allergy in sensitised users

    Contact dermatitis guidance includes cosmetic preservatives as common sensitiser categories.

    Contact dermatitis

Medical

Symptoms requiring medical advice

  • Eyelid eczema after wipe use
  • Spreading facial rash

ProductsVerified product findings

OuterDerm ke paas is waqt koi reviewed product-specific finding publish karne ke liye available nahi.

UnderstandIs substance ko detail mein samjhein

RecoverAgar use kar chuke hain — ab kya karein

ReviewSources & update history

Author: OuterDerm editorial team

Reviewer: OuterDerm fact-check desk

Last reviewed: 17 Aug 2026

  • Contact dermatitis — NHS · Accessed 2026-08-17 · United Kingdom

    Supports: Cosmetics and hair dyes can cause allergic contact dermatitis.