Sensitive skin is not a specific skin disease but a general term for a skin state that overreacts to various internal and external stimuli. It's common enough that research suggests about 40–50% of the global population perceives themselves as having sensitive skin, but the causes and patterns are very diverse.
Main characteristics of sensitive skin
- Reacts easily to cosmetics or environmental changes (stinging, burning, itching, redness)
- Severe tightness and rapid dryness after cleansing
- Sensitive to temperature changes, wind, dry environments
- Frequent trouble reactions to new cosmetics
- Often has a thin or damaged skin barrier
A separate concept from sensitivity, allergic skin, involves an immune reaction (IgE-mediated) to specific ingredients, and the allergen can be identified through dermatology testing.
Factors that worsen sensitive skin
Cosmetic-related
- Fragrance: the most common cause of sensitive-skin reactions
- Ethanol (denatured alcohol): barrier damage, dryness
- Some preservatives (parabens, MIT): risk of contact allergy
- Excess actives (retinol, high-strength AHA): barrier irritation
Environment-related
- Sudden temperature/humidity changes
- Strong wind, UV
- Fine dust, pollutants
- Excessive heating/AC
Lifestyle-related
- Sleep deprivation, stress (immune over-activation)
- Dietary allergens
- Prolonged mask wearing (mask dermatitis)
Sensitive-skin soothing & strengthening routine
Principle 1: Simplify ingredients
The more sensitive your skin, the shorter the ingredient list should be. More ingredients make it harder to find the cause and create cumulative irritation. "Minimalist skincare" is the best approach for sensitive skin.
Principle 2: Exclude fragrance and alcohol
Look for "Fragrance-free" and "Alcohol-free" labels. "Unscented" and "fragrance-free" are different. Some products use other scents to mask odor, so check the ingredient list directly for "Fragrance" or "Parfum."
Principle 3: Patch test new products
Test behind the ear, on the jawline, or inner arm for 48–72 hours, and apply fully only if there's no reaction. Don't introduce several new products at once — add them one at a time.
Recommended ingredients
- Madecassoside/Centella Asiatica: soothing, barrier strengthening
- Panthenol (provitamin B5): soothing, hydration
- Ceramides: refill barrier lipids
- Colloidal oatmeal: anti-inflammatory, hydration
- Allantoin: soothing, renewal
- Aloe vera: hydration, soothing
Ingredients to avoid
- Fragrance / Parfum
- Denatured Alcohol (Alcohol Denat.), SD Alcohol
- Methylisothiazolinone (MIT), Methylchloroisothiazolinone (CMIT)
- High-strength AHA (glycolic acid 10%+)
Sunscreen for sensitive skin
Physical-filter (zinc oxide, titanium dioxide) sunscreens suit sensitive skin. Among chemical filters, oxybenzone and octinoxate can be irritating, so caution is needed.
For sensitive skin, identifying and managing aggravating factors is more important than trying to "cure" it completely. The habit of carefully checking ingredients is your strongest tool.