Sensitive skin – causes, triggers and how to care for it

Some tips, tricks, and information from Lamelle Research Laboratories

Sensitive skin is a common concern that affects people of all ages and skin types. It often manifests as redness, irritation, dryness, or stinging after using certain products or being exposed to environmental factors. While some people are genetically predisposed to having reactive skin, lifestyle habits, skincare choices, and environmental influences also play a significant role in determining how sensitive your skin becomes. Understanding the triggers and how to protect your skin barrier is key to managing this condition effectively.

The eight worst things for sensitive skin

Certain habits and product choices can significantly worsen skin sensitivity. Avoiding these common triggers can help keep your skin calm and resilient.

1. Excessive sun exposure

Living in sunny climates, especially in Africa means our skin is frequently exposed to intense sunlight. While sunshine can be enjoyable, prolonged exposure without proper antioxidant support and sun protection can weaken the skin’s natural resistance. Over time, this leads to increased sensitivity, dryness, and irritation. Sunbeds have a similar effect, as they expose the skin to concentrated UV radiation that can damage the skin barrier.

2. Changing your skincare routine too quickly

When introducing new skincare products, especially those with active ingredients, it is important to phase them in gradually. Switching to an entirely new skincare range all at once can overwhelm the skin. For example, when adding a new night cream, use it every third night during the first week, every second night during the second week, and only use it nightly during the third week. Allow your skin time to adjust before introducing another new product.

3. Using soap with colourants and strong fragrances

Many soaps contain artificial colourants and fragrances that can irritate sensitive skin. These additives often trigger redness or discomfort.

Look for products specifically tested for sensitive skin and preferably free from colourants, fragrances, and unnecessary preservatives.

4. Using products with a neutral pH

While neutral pH products may seem gentle, they can actually aggravate sensitivity. The skin’s natural pH typically ranges between 4.5 and 5.6. Dry skin tends to be more alkaline, and products with a neutral pH may further disrupt the skin’s protective acid mantle, increasing sensitivity.

5. Skipping moisturiser because your skin is oily

Many people with oily skin believe they do not need moisturiser, but this is a misconception. The lipids within the outer layer of the skin differ from the oils produced by sebaceous glands. Even oily skin needs moisture to replenish essential lipids that maintain the skin barrier. Without proper hydration and lipid replacement, the skin can become compromised and more sensitive.

6. Hot baths and showers

Very hot water strips the skin of its natural oils. While hot showers may feel relaxing, they can dry out the skin and weaken the protective barrier, making it more prone to irritation.

7. Harsh scrubs and aggressive exfoliation

Physical scrubs can cause microscopic injuries to the skin. They also tend to exfoliate unevenly, leaving the skin irritated and vulnerable. Gentle exfoliation methods are far safer for sensitive skin.

8. Products containing alcohol or astringents

Alcohol-based products and strong astringents are particularly harsh on sensitive skin. These ingredients can strip away natural oils and trigger irritation. Some products may also increase the skin’s sensitivity to sunlight, making daily sun protection even more important.

Why do I react to my skincare?

Experiencing a reaction to skincare does not necessarily mean you are allergic to the product. In many cases, the skin simply becomes more sensitive due to external factors.

The skin contains a protective structure known as the lipid bilayer, made up of ceramides, free fatty acids, cholesterol, and water. This barrier prevents excessive moisture loss and protects the skin from harmful substances penetrating too deeply.

When this barrier becomes impaired, the skin becomes more reactive. Everyday factors such as stress, environmental changes, or humidity shifts can weaken this protective layer. When the lipid bilayer is compromised, ingredients that would normally be harmless may penetrate deeper into the skin and cause irritation.

In severe cases, even sweat, pollen, or environmental allergens may trigger reactions if the barrier is significantly damaged.

How diet influences dry skin

Your diet can have a noticeable effect on your skin’s health. Just as your body requires proper nutrition to function well, your skin also needs adequate hydration, vitamins, and antioxidants.

The skin is the largest living organ in the body, but it is also the furthest from your digestive system and often receives nutrients last. If your diet lacks essential nutrients, your skin may show signs of stress, including sensitivity.

Key elements for healthy skin include:

• Hydration: Drinking enough water supports skin moisture.
• Antioxidants: Nutrients like Vitamin C help protect the skin from oxidative stress.
• Balanced nutrition: A diet rich in fruits, vegetables, and healthy fats supports skin repair and resilience.

Can hard water cause sensitive skin?

Hard water itself does not necessarily cause skin sensitivity, but it can aggravate existing sensitivity. Hard water contains high levels of dissolved minerals such as calcium and magnesium.

These minerals interfere with the surfactants used in cleansers, making them less effective. As a result, foaming cleansers may not rinse away properly and can leave a residue on the skin that feels uncomfortable.

Because the cleanser does not work as efficiently, people often compensate by using more product or rubbing their skin more aggressively. Over time, this repeated friction can contribute to skin irritation and sensitivity.

Common misconceptions about sensitive skin

Myth 1: Sensitive skin is always genetic: While genetics can play a role, lifestyle factors often contribute to skin sensitivity. Stress, product overuse, and environmental exposure can all trigger reactive skin.

Myth 2: If you react to a product once, you will always react to it: This is not always true. If the skin barrier was compromised at the time of the reaction, you may tolerate the product later once the skin has recovered.

Myth 3: Sensitive skin can only be treated with medication: Many people believe that cortisone creams, antihistamines, or very basic moisturisers are the only solutions. Many skincare products are specifically designed to soothe and restore sensitive skin without long-term side effects.

Choosing sun protection for sensitive skin

Sun protection is essential, but the active ingredients in sunscreens can sometimes trigger sensitivity. The best sunscreen is one that your skin feels comfortable wearing every day.

Before applying a new sunscreen to your entire face, test it underneath your chin for several days. If your skin tolerates it well, you can then apply it to your face, neck, and décolleté.

Since sunscreen should be used daily, finding a formula that suits your skin is important.

How to treat sensitive skin

Check ingredient lists carefully and build a record of ingredients your skin may react to.

Inform your skincare therapist if you have reactive skin so they can adjust treatments and product recommendations.

Use barrier-repair products that support the lipid bilayer and contain soothing, anti-inflammatory ingredients.

Ingredients to avoid

For sensitive skin, the general rule is to avoid artificial colourants, strong preservatives, and fragrances. These ingredients frequently trigger irritation.

However, it is important to note that not all colour in skincare products comes from artificial dyes. Some ingredients, such as antioxidants, naturally have yellow or orange tones. Always check whether the colour comes from the ingredient itself rather than an added dye.

Sensitive skin often results from a weakened skin barrier rather than a permanent condition. By protecting your skin from harsh ingredients, excessive sun exposure, and aggressive treatments, you can strengthen its natural defences. With the right routine, balanced nutrition, and careful product choices, sensitive skin can become healthier, calmer, and more resilient over time.