Transepidermal Waterloss - TEWL

What is Transepidermal Water Loss (TEWL) and How Does It Affect Your Skin?

Transepidermal Water Loss (TEWL) is the process by which water evaporates from the skin’s surface and is lost to the environment. Water passes through the epidermis, the outermost layer of the skin, and is lost by diffusion. This is a completely natural process and an important part of the skin’s function, but when not properly controlled, it can lead to dry and damaged skin.

Why is TEWL Important?

The skin's barrier function is crucial in protecting the body from external stressors such as bacteria, chemicals and other environmental factors. When TEWL increases, it means that the skin's barrier function is weakened, which causes more water to be lost from the skin than normal. This can lead to:

- Dryness: When skin loses too much moisture, it becomes dry, which can result in tightness, flaking, and discomfort.

- Irritation and sensitivity A weakened skin barrier makes the skin more susceptible to irritation and can aggravate sensitive skin conditions such as eczema or rosacea.

- Aging: Chronic moisture loss can accelerate signs of aging, such as fine lines and wrinkles, as the skin loses its elasticity and plumpness.

Several factors can contribute to increased TEWL:

1. Environmental factors Cold weather, low humidity, and exposure to wind can all increase water loss from the skin. This becomes especially evident for many in our country during the winter.

2. Improper Skincare Products: Using cleansers that are too harsh for your skin and/or washing your skin too often can strip your skin of its natural oils, which can damage the skin barrier and increase TEWL.

3. Hot Water: Frequent exposure to hot water, especially during showers and baths, can remove the skin's protective lipids and lead to increased moisture loss.

4. Skin conditions Conditions such as eczema, psoriasis, and atopic dermatitis are often associated with a weakened skin barrier and increased TEWL. Here it is especially important to get advice on products that are suitable for your skin.

How Can You Reduce TEWL?

Maintaining skin moisture balance and protecting the barrier function is key to reducing TEWL and keeping skin healthy and hydrated. Here are some tips:

1. Use a Moisturizing Cream: Choose moisturizers that contain ingredients like hyaluronic acid, glycerin, ceramides, and fatty acids. These help hydrate the skin and strengthen its barrier function.

2. Avoid harsh products: Use gentle cleansers that won't dry out your skin. Avoid products with alcohol and strong fragrances, which can irritate and worsen dryness.

3. Limit Hot Water Take shorter, cooler showers to avoid damaging your skin's barrier. Apply moisturizer immediately after showering to lock in moisture.

4. Protect against the "Environment": During cold and dry periods, use a protective barrier cream and consider using a humidifier at home to keep humidity at a healthy level.

5. Use serum**: Serums with niacinamide, panthenol, or cholesterol can help repair and strengthen the skin's barrier function, which reduces TEWL.

6. "Stay hydrated": Drink enough water throughout the day to help keep your skin hydrated from within.

Summary

TEWL is a crucial factor in the health and appearance of your skin. By understanding what causes increased moisture loss and taking steps to protect and hydrate your skin, you can effectively reduce TEWL and keep your skin soft, supple and radiant. Remember, regular care and the right products can make a big difference in maintaining a healthy skin barrier.

If you have questions about TEWL or want to know more about how you can improve your skincare routine, contact us at Care of Skin – we will be happy to help you find the best solution for your skin!