What is the barrier function that protects precious skin?

The moisture of the skin is maintained by the inherent barrier function present in the skin from the beginning.

However, during the cold season, the skin may become dry, leading to a decrease in sebum secretion.

This is evidence that the barrier function is weakening.

If left unattended, it may become a cause of various troubles.

In this article, we will explain the skin’s barrier function, the reasons for its decline, and methods of dealing with it.

The essential barrier function for the skin

The barrier function is a protective feature inherent in the stratum corneum, the outermost layer of the skin.

There are three barrier functions: sebum film, natural moisturizing factor (NMF), and intercellular lipids.

We will explain the functions of each of these.

〈Sebum Film〉

The sebum film is located on the surface of the stratum corneum and is composed of sweat and sebum. It is a function that healthy skin naturally possesses. Its main role is to protect the skin from external stimuli such as friction, dryness, and bacteria. Additionally, it works to prevent the evaporation of moisture contained in the stratum corneum.

＜Natural Moisturizing Factor (NMF)＞

The Natural Moisturizing Factor (NMF) is present in the interior of the stratum corneum. Its role involves storing moisture and hydrating components found in products like toners.

＜Intercellular Lipids＞

Intercellular lipids are primarily composed of ceramides. They act like cement, filling the gaps between the corneocytes (cells of the outermost layer of the skin) similar to the way bricks are held together by mortar. By anchoring cells together, their role is to retain moisture within the stratum corneum. These three protective functions work together to safeguard our skin.

Why does the barrier function weaken?

Our skin’s barrier function works correctly when the balance of moisture and oil is maintained. While it is ideal to sustain this balance, factors such as damage from UV rays, friction, and incorrect skincare routines can weaken it. Cold seasons, in particular, make the skin prone to dryness, and dryness becomes a significant factor in the reduction of the skin’s barrier function.

As the barrier function weakens, the skin membrane may become thinner, and the texture of the stratum corneum may become uneven. This leads to the evaporation of moisture from the inside of the skin, creating a negative cycle that exacerbates dryness.

Disruptions in turnover also contribute to the decline in the barrier function. If the turnover process is normal, it helps maintain healthy skin. However, a too rapid turnover can weaken the ability to retain moisture, while a too slow turnover can leave old keratin, causing roughness.

Factors such as lack of sleep and imbalances in nutrition can contribute to disruptions in turnover, making it essential to reassess lifestyle habits.

How to restore the barrier function?

The inherent barrier function of the skin can be restored through skincare. Let’s explore what kind of skincare is effective for recovery.

＜Keeping the Skin Clean＞

When the barrier function is compromised, there is a possibility of unexpected skin issues when substances that can be ingredients or allergens in cosmetics come into contact. In the morning and evening, it is important to cleanse the face using the correct method to keep the skin in a clean state.

Cleansing products and facial cleansers with strong cleaning power can strip away too much sebum. If the skin lacks sufficient sebum, the barrier function may weaken. Therefore, it is advisable to choose products that are as gentle as possible on the skin.

During cleansing, it is also crucial to lather and wash in a way that envelops the skin. Rinsing with lukewarm water can help reduce the burden on the skin.

<Preventing Dryness>

If the skin becomes dry, the barrier function weakens. Especially in cold weather, it is ideal to maintain a balanced state of moisture and oil to prevent dryness. To sustain this balance, it is necessary to continue with daily meticulous skincare.

Identify skincare products such as toners, lotions, and serums that suit your skin and use them consistently. Some skincare items may contain ingredients like parabens, alcohol, and colorants, which can be harsh on skin with a weakened barrier function and become a burden. Therefore, it is important to check the ingredients.

Choosing products with labels indicating allergy testing is recommended.

<Using a Hand Press to Thoroughly Soak in the Toner>

When applying toner, use the hand press technique by enveloping both hands with the palms.

Some people may choose to apply skincare products with their hands to avoid potential irritation from using cotton pads. In such cases, it’s crucial to ensure that the hands are well-moisturized and kept soft.

Engaging in the hand press technique enhances the sensation of penetration. By ensuring that moisture deeply penetrates the skin, it helps prevent the decline of the barrier function. Give it a try to see the results.

There are various skincare methods, and what works best can vary for each individual. However, these methods are beneficial for recovery, so if you are concerned about dryness, it’s worth trying.

Summary

Winter is a season when the skin tends to become dry, and the skin’s barrier function gradually weakens. You want to restore the skin’s barrier function and maintain beautiful skin even during the winter!

With a little effort, you can improve the condition of your skin. So, let’s be mindful of our daily skincare routine and work towards achieving healthier skin. 😊