Sensitive skin: signs, triggers and gentle care

Sensitive skin reacts to things that other skin tolerates. A new cleanser stings, a moisturizer burns for a minute, or the skin turns red and itchy after a serum. The American Academy of Dermatology (AAD) describes sensitive skin in one line: it may sting or burn after product use. This guide explains the common triggers, how to read labels that promise gentleness, how to test a product safely, and when a reaction points to a condition a doctor should see. To check your overall type, see how to find your skin type.

Signs of sensitive skin

The AAD lists sensitive skin as one of five skin types, next to normal, dry, oily and combination. It can overlap with the others. Dry skin is often sensitive, and the AAD's page on acne that will not clear says acne-prone skin is sensitive too.

Common signs:

• Stinging or burning within minutes of applying a product
• Redness, itch or tightness after washing
• Reactions to many products, especially ones with fragrance
• Skin that feels worse in heat, cold or dry air, which the NHS says can make irritant reactions worse

On darker skin, redness can be harder to see. The NHS says skin reactions can turn darker skin dark brown, purple or grey, where lighter skin turns red.

Common triggers

Many reactions on sensitive skin are set off by something that touches it. The NHS separates two kinds of reaction.

Irritants damage the outer layer of skin directly. The NHS lists soaps and detergents, antiseptics, perfumes and preservatives in toiletries or cosmetics, and water, especially hard or chlorinated water, among common irritants. It says irritant symptoms can be made worse by heat, cold, rubbing and dry air.

Allergens make the immune system react. The NHS lists cosmetic ingredients such as preservatives, fragrances, hair dye and nail varnish hardeners among common allergens. The FDA says the common allergens in cosmetics fall into five groups: natural rubber, fragrances, preservatives, dyes and metals.

Active ingredients. The AAD says some ingredients, such as retinol and glycolic acid, can irritate your skin, particularly if your skin is sensitive, and calls this normal and temporary. Acne treatments such as benzoyl peroxide, salicylic acid and adapalene also tend to dry and irritate the skin.

Rough handling. Scrubs, brushes, washcloths and hot water all add irritation. The AAD's face washing advice is to use your fingertips and lukewarm water, and never to scrub.

Why labels are not enough

Many products say "sensitive skin", "hypoallergenic" or "fragrance-free" on the front. These words help you narrow your choice, but they guarantee nothing.

• The FDA says there is no federal standard or definition that governs "hypoallergenic", "fragrance-free" or "for sensitive skin" on cosmetic labels in the U.S.
• The FDA says some products labeled "unscented" may contain fragrance ingredients, added to hide the smell of other ingredients.
• The FDA says fragrance ingredients can be listed simply as "Fragrance" on an ingredient list, without naming each one.
• A 2018 systematic review in the Journal of Dermatological Treatment found that "fragrance-free", "hypoallergenic", "non-comedogenic" and "oil-free" are not regulated by any governing body. It also found that products labeled as having natural ingredients are not necessarily safer or less irritating.
• A dermatologist quoted in the AAD's moisturizer guide cautions people with sensitive skin away from organic skin care lines, because many of their ingredients can aggravate allergies, and jokes that poison ivy is all natural.

Two labels are still worth looking for. The AAD recommends products labeled "fragrance free" for sensitive skin, and warns that "unscented" can hide masking fragrances. Short ingredient lists also make it easier to find what caused a reaction.

How to test a new product

The AAD's method for testing a product at home:

1. Put the product on a quarter-sized spot where it will not be rubbed or washed off, such as the underside of your arm or the bend of your elbow.
2. Apply it twice a day for seven to 10 days, using the normal amount. For a product you wash off, such as a cleanser, leave it on for five minutes or as long as the directions say.
3. If you have no redness, itch or swelling after seven to 10 days, you can use it.
4. If your skin reacts, wash the product off gently, stop using it, and use a cool compress or petroleum jelly to calm the skin if needed.

If a reaction is severe and does not settle, the AAD says to see a dermatologist, who may order patch testing, a medical test that finds the exact ingredient. How to patch test a new skincare product walks through the steps in detail.

A routine for sensitive skin

Fewer products mean fewer triggers. This routine follows the AAD, NHS and NICE advice above.

Step	What to use	Why
Cleanser	Mild, soap-free, fragrance-free, with lukewarm water and fingertips	The AAD says bar soap often has harsh, drying ingredients. NICE says soap-free cleansers are less irritating than soap bars
Moisturizer	Plain, fragrance-free cream. An ointment for dry areas if you do not get acne	The NHS says ointments are usually free of preservatives, so they suit sensitive skin
Sunscreen	Labeled "sensitive skin", no fragrance, parabens or oxybenzone	The AAD's sunscreen guide for sensitive skin
If sunscreen stings	One with only zinc oxide and titanium dioxide	The AAD suggests these for skin that stings or burns with sunscreen

Exfoliating. The AAD says people with dry, sensitive or acne-prone skin may prefer just a washcloth and a mild chemical exfoliator, because scrubs, brushes and sponges may be too irritating. It also warns that exfoliating while using retinoids or benzoyl peroxide can worsen dry skin, and that over-exfoliating leaves skin red and irritated.

Sensitive skin and acne treatment

Sensitive, acne-prone skin can still be treated. Start at the lowest strength and build up slowly. The NHS says to always start benzoyl peroxide at the lowest strength to see how well your skin tolerates it, and that side effects such as redness and dryness usually improve after a few days or if you use it less often. Add one treatment at a time, and wait two to three weeks before adding another.

A fragrance-free moisturizer after the treatment helps. The AAD says moisturizer helps skin tolerate drying acne treatments. For retinoids, see how to start adapalene, which explains a slow start.

Irritation and dark marks on darker skin

For people with medium to dark skin tones, irritation can leave a mark behind, as acne on darker skin explains. The AAD's page on dark spots in darker skin tones says that when a skin or hair care product irritates your skin, the product can cause dark spots. Its advice is to try gentler products, which are less likely to irritate. It says products that are gentle on the skin are often labeled "for sensitive skin" or "fragrance-free".

The same page says that when your skin is no longer irritated, new dark spots tend to stop appearing and existing spots often clear on their own over time. The AAD's exfoliation page adds that people with darker skin tones should avoid strong chemical or mechanical exfoliation, because more aggressive exfoliation can lead to dark spots.

Keep a simple product record

When skin reacts to many things, it helps to know exactly what changed. Write down each product you start, the date, and how your skin looks and feels over the next two weeks. Add only one new product at a time, two to three weeks apart. If a reaction happens, you will know which product to stop, and you can bring the list to a doctor. A photo in the same light on day one and day 14 makes small changes easier to see.

When to see a doctor

Some skin that seems sensitive has a condition behind it.

• Rosacea. The NHS lists redness across the nose, cheeks, forehead, chin, neck and chest that comes and goes, and a burning or stinging feeling when using water or skincare products, as first signs of rosacea. It says the redness can be harder to see on brown or black skin.
• Contact dermatitis. The NHS says to see a GP if symptoms are persistent, keep coming back or are severe, and to seek medical advice straight away for a severe reaction or signs of infection.
• Eczema. Dry, cracked or itchy skin that does not improve can be eczema, which a doctor can diagnose and treat.

See a doctor if reactions happen with almost every product, if your skin blisters, swells or oozes, or if stinging and redness happen without any product at all.