Why are ceramides necessary for dry skin?

The essence of dry skin is not just "lack of moisture"

Dry skin is often thought of as simply "a lack of moisture in the skin," but in reality, it's often a case of a weakened ability to "retain and prevent moisture loss." The skin's surface (stratum corneum) can be likened to bricks and mortar. The stratum corneum cells are the bricks, and the lipids that fill the gaps between the cells are the mortar. The main player in that "mortar" is ceramide.

What are ceramides? They are "intercellular lipids" that support the stratum corneum barrier.

Ceramides are an important component that makes up about half of the intercellular lipids in the stratum corneum. They are arranged in a regular pattern in the gaps of the stratum corneum, holding moisture in place while preventing the intrusion of external irritants (such as dryness, friction, pollen, and ultraviolet rays).

When this barrier function weakens, not only does moisture evaporate more easily from within the skin, but irritants also penetrate more readily, making you more prone to "sensitive skin signs" such as redness, itching, and stinging. In caring for dry skin, it's essential to not only add moisturizing ingredients but also to focus on rebuilding the barrier.

Three reasons why dry skin needs ceramides

Reason 1: It enhances the body's ability to "retain" moisture.

Hyaluronic acid and glycerin are good at attracting moisture, but if moisture easily escapes from the outer layer of the skin, the hydration may not last long. Ceramides improve the structure of the stratum corneum itself and create an environment that easily retains moisture, making them especially important for people who repeatedly experience dryness.

Reason 2: Creates a "barrier" that is resistant to stimuli.

As dryness progresses, even minor daily irritations such as friction from washing your face or wearing a mask, or seasonal changes, can easily cause skin irritation. Ceramides fill the gaps in the stratum corneum, preventing the intrusion of external irritants, thus acting as a "protection" for dry skin that tends to become sensitive.

Reason 3: It provides a foundation for using whitening and anti-aging ingredients.

Vitamin C, retinol, and peeling ingredients can cause irritation depending on your skin condition. If you apply aggressive treatments to skin that isn't properly protected, dryness and redness are more likely to worsen. Strengthening the skin's foundation with ceramides is ultimately a shortcut to making it easier to continue with other high-performance skincare products.

Which ceramide should you choose? Key points for reading the label.

In cosmetic ingredient lists, ceramides are listed under various names. Let's learn how to distinguish between them.

• Human-type ceramides (e.g., ceramide NP, AP, EOP, etc.): These have a structure similar to ceramides found in the stratum corneum and are often chosen for basic skincare for dry skin.

• Pseudo-ceramides: Ingredients that aim to mimic the function of ceramides. Their feel and compatibility vary depending on the product design.

• Plant-derived ceramides (e.g., derived from rice bran): Sometimes included to support moisturizing.

• 
  

For those with very dry or sensitive skin, it's recommended to start with a simple formula, centering on a moisturizer containing human-type ceramides.

Effective usage: Timing and layering

1. Moisturize as soon as possible after washing your face: Before the moisture evaporates, apply toner, then seal it in with a lotion/cream containing ceramides.

2. Do not rub: Friction is a major factor in weakening the barrier. Apply with a "pressing" motion.

3. Start your morning routine with UV protection: UV rays can easily worsen dryness and inflammation. Complete your protection with sunscreen.

4. 
   

Furthermore, during times when your skin is prone to fluctuations due to the season or your physical condition, it's often more effective to focus on the "basics of protection (moisturizing + avoiding friction + UV protection)" rather than increasing the number of products you use.

Frequently Asked Questions (Q&A)

Q. Should I incorporate ceramides into my skin through lotion or cream?

A. People with dry skin tend to see better results from using oil-based products such as lotions and creams, which act as a barrier. It's helpful to be aware of the division of roles: toner provides moisture, and cream retains it.

Q. How long does it take to notice a change?

A. Some people may experience a reduction in tightness within a few days to two weeks, but consistency is key for the stratum corneum to stabilize. Try continuing for 4 to 8 weeks, within a range that doesn't cause irritation.

Q. Can I use it even if my skin is peeling or red?

A. Hypoallergenic moisturizers can be helpful, but if your condition is severe, it's safer to consult a doctor rather than applying multiple moisturizers on your own. Seeking medical attention is especially recommended if you experience pain or oozing (exudation).

Summary: For dry skin, the basic principle is to "strengthen the barrier with ceramides."

Caring for dry skin isn't just about adding moisture; it's also crucial to strengthen the skin's barrier—the stratum corneum—to prevent moisture loss. Ceramides are key components in this process, helping to retain moisture, protect against irritation, and create a foundation for high-performance skincare. Start by reducing friction, and continue with a combination of moisturizing and UV protection.

eCARE also carries clinic-exclusive moisturizing care products for dry skin. We can also advise you on how to choose the right products based on your skin type and the items you are currently using, so please feel free to consult us.

*This article is for general informational purposes only. Skin conditions vary from person to person, so please consult a doctor if your symptoms are severe or if you are unsure whether treatment is necessary.