Product Description
Product Introduction of Cosmetic Raw Materials
The outermost layer of the epidermis is the stratum corneum, which acts as a skin barrier, blocking the entry of bad things from outside and preventing the loss of good things from inside the skin.
If the stratum corneum is compared to a brick wall structure with a defensive function, the keratinocytes are the bricks and the intercellular lipids are the mortar. However, intercellular lipids are mainly composed of ceramides, cholesterol, fatty acids and vitamin E/D. Of these, up to 50% are ceramides, so it is clear that ceramides are important in the skin and can be described as the cement in the brick wall.
Ceramide is a lipid that occurs naturally in the skin and is a very important component of the skin barrier (stratum corneum) at levels of up to 40-50%.
In terms of chemical structure, ceramide is a type of neurosphingomyelin lipid consisting of a long chain of neurosphingomyelin bases and fatty acids.
Function of Cosmetic Raw Materials
1. Barrier repair and anti-allergy
Ceramides in the skin's stratum corneum combine cholesterol and fatty acids to form a dense lipid bilayer that protects against external stimuli. Ceramides play a leading role in the regulation of the skin's barrier function, helping to strengthen the stratum corneum, protect against the intrusion of external harmful substances and reduce the incidence of allergies.
Experiments have shown that topical application of a certain amount of natural synthetic ceramide can restore the loss of skin barrier function due to treatment with organic solvents and surfactants, thus providing excellent protection against skin allergies.
2. Moisturising effect
Ceramide is both hydrophilic and lipophilic, giving it a powerful "unifying effect": it binds cholesterol and fatty acids to form a dense bilayer of molecules. Experiments have shown that ceramide plays a leading role in restoring moisture to the skin after lipid damage to the stratum corneum and skin cracking, by effectively binding water molecules and forming a net-like structure to maintain skin moisture.
3. Adhesive effect
Ceramides are linked to cell surface proteins via lipids and can enhance the adhesion between keratinocytes, thus serving to reduce the incidence of dryness and flaking. This is a specific effect of ceramides, without which the firmness of keratinocyte adhesion is greatly reduced, leading to dry, flaky skin (no adherent keratinocytes).
4. Anti-ageing
As the skin ages, the amount of ceramide in the skin decreases and the lack of more skin keratinocyte "binder" causes the skin to become dry, flaky and rough, so the stratum corneum becomes thinner, less elastic and wrinkles appear.
Ceramide supplementation improves the skin's ability to hold water and also acts as a binder to reduce stratum corneum loss, increase stratum corneum thickness and thus improve skin elasticity.
What may happen if we lack of Cosmetic Raw Materials Ceramides
If the skin lacks ceramides, it opens a channel between the internal skin and the external environment, and dust and bacteria can easily invade the skin, and the good skin base may be easily destroyed. The specific manifestations of the lack of ceramides in the skin can also bring about many skin problems. The skin barrier is not strong enough, moisture is not replenished and locked in, and bacteria and other harmful substances are difficult to defend against, which may result in skin problems such as
Dermatitis (including hormonal face)
Psoriasis, eczema, red blood cells
sensitive skin, dry skin, rough skin.
In these problematic skin types, ceramide levels are significantly lower than in normal skin.
As well as the natural ageing of the skin causing a reduction in ceramide, ceramide also changes with the seasons. During the cold weather of winter and the dry spring, it will be less present in the skin than in other seasons, which is one of the reasons why people's skin can become rough and dry in spring.
A lack of ceramide in the skin may also cause skin care products to be much less effective (it feels like nothing is absorbed when applied), no matter how much you hydrate and moisturise, your skin will still be dry and your skin condition will often recur, which may also be related to the damaged stratum corneum barrier due to ceramide deficiency.
Classification of Ceramides
Ceramide 1 = Ceramide EOS
Ceramide 2 = Ceramide NS
Ceramide 3 = Ceramide NP
Ceramide 4 = Ceramide EOH
Ceramide 5 = Ceramide AS
Ceramide 6 = Ceramide AP
Ceramide 6 ll
Ceramide 7 = Ceramide AH
Ceramide 8 = Ceramide NH
Ceramide 9 = Ceramide EOP
Ceramide E= CETYL-PG HYDROXYETHYL PALMITAMIDE
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