Skin barrier: skin barrier = sebum membrane+stratum corneum is mainly used to lock moisture, prevent nutrient moisture loss, and form a natural defense against external stimuli.

Function:

Protect and isolate harmful substances

Regulate skin absorption

Prevent evaporation of skin moisture

Prevent all kinds of mechanical stimulation

Prevent nutrient loss

It has a certain buffering effect on acid and alkali.

Protect the skin from external stimuli.

The skin barrier is not just the stratum corneum. It also includes physical barrier, chemical barrier, microbial barrier and immune barrier.

Physical barrier

For example, the stratum corneum acts as a wall to separate the skin from the outside world. On the one hand, it can lock moisture, on the other hand, it can prevent foreign objects from entering.

Chemical barrier

For example, the pH of the skin, under normal circumstances, the skin is acidic, so it is difficult for bacteria to grow.

Microbial barrier

There are a large number of microorganisms on the skin, which maintain a balance between them and interact closely with the immune system to prevent other microbial infections.

Immune barrier

Such as white blood cells, the body's immune function and so on. When bacteria invade, white blood cells can devour the invading bacteria, and the human immune system will also start, thus protecting the skin.

1. Improper skin care

Often do not pay attention to sun protection

Wash your face with high water temperature and don't pay attention to makeup removal.

Excessive cleaning or use of strong cleaning products.

In brush acid, the stratum corneum thins frequently.

Chemical stimulation by using corrosive products.

High alcohol water directly dissolves the sebum film on the face.

Excessive hydration of skin

2. Improper maintenance:

Be cautious after medical beauty. Many girls have sensitive skin after simple medical skills.

3. Other circumstances

Cosmetics are not suitable. Change cosmetics frequently.

Unauthorized external use of stimulants. There are also cases of less sebaceous glands.

Small knowledge of skin barrier

Specific manifestations of damage

1. Dislike

After cleaning 10 minutes, the face is still dry! Tight, sensitive, fragile, dry and itchy skin.

2. External oil is dry inside.

Large pores are easy to produce oil. But there will still be dry skin, peeling and closed acne. His face was dull, yellow and rough.

3. Inflammation

There is a lot of red blood on the face, so it is not easy to lock the water. After makeup, the skin looks thin and then dries quickly.

4. Fragile and sensitive

For most non-strong skin care products, fine lines and dry lines are unbearable, and the skin is red.

How to make up for the damage?

If possible, try not to wear makeup.

If you must make up, try to give priority to light makeup.

Choose products with less irritation and less chemical components.

Try to use powdered cosmetics, such as pearl cream, powder cake, eyebrow pencil and eye shadow. Because powdered products are basically physical and not easy to irritate the skin.

Even if you only wear sunscreen, you should remove makeup. You can choose a mild and irritating makeup remover, and try to choose makeup remover.

Composition of repair barrier

Recommended ingredients for barrier repair:

Witch hazel nerve cooling amine squalane hyaluronic acid

Moisturizing, moisturizing, repairing barrier, moisturizing, moisturizing, whitening

Machiyuan Centella asiatica calcium pantothenate allantoin

Repair cells Shu Min moisturizing anti-allergic moisturizing repair cells

The barrier away from the component is damaged.

(1) salicylic acid and fruit acid

(2) ethanol

(3) alkyl pulse of formaldehyde, benzophenone and imidacloprid

(4) Cinnamyl alcohol, clove alcohol and linalool

How to protect the skin when the barrier is damaged?

Gentle cleaning:

Cleansing products should be mild and can be cleaned with amino acids.

Avoid exfoliation:

. After the stratum corneum is damaged, the stratum corneum itself is too thin, and further shedding will only become thinner and thinner, and the barrier will be more difficult to repair.

The product is mild:

For non-irritating products, try to choose mild skin care products.

Less damage to the skin.

Pay attention to sun protection:

Ultraviolet rays are the biggest killer of the skin. If you don't pay attention to sun protection, it will also cause further damage to your skin.

Tips for Skin Barrier-Precautions for Barrier Repair

Gentle cleaning:

Wash your face with warm water, don't use soap-based cleansing, and don't exfoliate brush acid. Choose low-irritation, safe and alcohol-free cleaning products.

Supplement and repair

Simplify skin care: only use basic hydrating or repairing products, such as chamomile and aloe, and try to choose products with single composition and simple effect.

Enhance resistance:

Exercise more, eat more fruits and vegetables, fully supplement vitamins, and improve the normal metabolic circulation function of body functions.

Repair in damage period

It is not recommended to use functional products during skin allergy, and wash your face with warm water every day, which is sensitive to symptoms; After remission, simplify skin care without makeup. Severe allergies suggest seeing a doctor.