Sensitive Skin: How to Care for It and Avoid Irritation

Sensitive skin is a common condition among many people in Thailand. This skin type has a weaker-than-normal skin barrier, so irritants and environmental factors can easily trigger redness, dryness, itching or a stinging sensation. Caring for sensitive skin properly is very important because it helps strengthen the skin barrier and reduces the chance of irritation. In this article, a dermatologist explains which ingredients to avoid, which ingredients are suitable, and how to test products before use.

Ingredients to Avoid for Sensitive Skin

Sensitive skin should avoid, or be cautious with, ingredients that commonly trigger irritation, including:

• Fragrance and alcohol: Fragrance (Parfum) and alcohol are the most common causes of skin irritation. Choose products labeled fragrance-free and alcohol-free.

• High-concentration AHA/BHA: Exfoliating acids may irritate the skin if it is not yet strong enough. Start with a low concentration and test first.

• High-concentration retinol: It may cause peeling, redness and irritation in the beginning. Use a low concentration and increase gradually.

• Sodium Lauryl Sulfate (SLS): A cleansing agent that may disrupt the skin barrier. Choose a gentle, SLS-free cleanser.

Suitable Ingredients for Sensitive Skin

Ingredients that soothe the skin and strengthen the skin barrier are suitable for sensitive skin, including:

• Centella: Centella (Centella Asiatica) contains active compounds that help reduce inflammation and support collagen production, helping to repair the skin barrier well.

• Ceramides: Ceramides help fill in the missing structure of the skin barrier, making the skin stronger and better at retaining moisture.

• Moisturizing ingredients: Hyaluronic Acid and Panthenol (Pro-Vitamin B5) help attract and retain moisture and reduce dryness and tightness.

• Mineral sunscreen: Mineral (physical) sunscreens, such as those with Zinc Oxide or Titanium Dioxide, are more durable and less irritating than chemical sunscreens, so they suit sensitive skin.

How to Test a New Product (Patch Test)

Before using a new product on the face, test for allergies for safety. Apply the product to the inner crook of the arm and watch for symptoms for 24–48 hours. If there are no signs of allergy such as redness, itching or swelling, you can then use it on the face. Add new products one at a time rather than changing several at once, so that the cause can be identified if irritation occurs.

Frequently Asked Questions

What is the difference between sensitive skin and true skin allergy? Sensitive skin is a condition in which the skin is prone to irritation because of a weakened skin barrier, while a true skin allergy is an allergic reaction to a specific substance. If you suspect an allergy to a particular substance, see a doctor to find the cause.

Can sensitive skin use retinol? Yes, but start with a low concentration and increase the frequency gradually, and test for allergies first. If the skin peels or becomes very red, reduce use or consult a doctor.

Do I need to patch test every time? You should do it every time you start a new product, by applying it to the inner crook of the arm and waiting 24–48 hours, to reduce the risk of irritation on the face.

What kind of sunscreen should sensitive skin use? Choose a mineral sunscreen, such as Zinc Oxide or Titanium Dioxide, because it is less irritating than chemical sunscreen and protects delicate skin well.

Sensitive skin can be kept healthy by choosing gentle ingredients that strengthen the skin barrier. If you have chronic irritation or suspect an allergic condition, consult a dermatologist at Siam Dermatology. Phone +66 61 448 7000 or LINE @siamderm

Written by Dr. Patara Voravutinon, Dermatologist · Last reviewed July 16, 2026