”Thin skin” and “sensitive skin” are the most common adjectives used by cosmetic customers, who feel red, itchy and dry after using cosmetics, easily irritated by anything, and can only spray water. Therefore, it is necessary to analyze the causes of these sensitive thin skins.
Normally, the epidermis has a variety of special cell layers and intercellular lipids to form a barrier system. It can resist all kinds of external mechanical, physical, chemical and biological stimuli. Skin flaking, infections, itching, redness, follow one another. Thin epidermis, mostly seen in thin stratum corneum or epidermal barrier damage, but of course, there are also individual damage to the cells of all layers of the epidermis.
Depending on the cause, it can be classified as congenital or acquired.
Some congenital diseases can lead to epidermal dysfunction and form various skin problems, congenitally caused epidermal problems such as fire cotton gum babies, ichthyosis, etc. need hospital treatment, we do not need to care about it, we mainly discuss the acquired epidermal thinness for the problems caused by epidermal thinness in acquired skin care.
1, due to skin disease scratching caused by thin epidermis skin problems are epidermal scabs, pimples, or feeling itchy, etc
If you can’t control yourself after excessive scratching with your hands, it is the skin appears artificial line lesions. In particular, after some people produce acne pimples, they want to quickly eliminate acne pimples due to the trend of beauty psychology, so they make a strong effort to pick at the skin, forming epidermal peeling type damage.
2.Epidermal thinning caused by physical factors for cosmetic purposes
If the face stays a layer of dead skin will affect the beauty, most people will have such a mentality, so every day you seriously spend a lot of time to exfoliate the face care, such as washing the face to scrape hard; also some powerful manufacturers also invented a face wash machine this high-tech face scrubbing things, publicity this machine can wash the face especially clean, blackheads and whiteheads go without trace; there are some beauty salons or individuals, are using a variety of The product of scrubs to do dead skin treatment, twice a week! With scrubs in the skin repeatedly grinding ah grinding, beyond the limits of the new generation of epidermis, day after day, a variety of sensitive skin red blood was born.
Usually excessive exfoliation treatment brings too many problems, so in particular, I want to put forward to say: exfoliation treatment premise is the best: found that the skin has been aging unexfoliated keratin accumulation before the work, because the metabolism of the stratum corneum is the entire epidermal metabolism half that 14 days, so exfoliation operation each time the best more than 14 days before doing, sensitive skin is completely stop exfoliation treatment.
Chemical factors cause thin epidermis
1, acid caused by thin epidermis
The normal epidermis has a metabolic cycle, which is generally considered to be 28 days, and the metabolism of the outermost stratum corneum of the epidermis is generally 14 days. But many beauty and skin care fanatics, in order to make the skin Avenue meticulous smooth as if peeling eggs like effect, so every few days in the beauty salon or at home for “peeling”, too high concentration, too fast frequency of peeling leads to the stratum corneum is constantly stripped, causing a series of serious consequences, the thin skin stratum corneum is difficult to resist the natural temperature changes. Cold and hot will cause skin sensitivity, the skin received outside dust or cosmetic stimulation, and inflammation, causing congestion itching and stinging some discomfort.
2, alkali caused by thin epidermis
Originally, the epidermis of the stratum corneum is protected by something called physiological sebum, which can firmly adhere to the outer stratum corneum in one piece and will not flake off, similar to the relationship between bricks and cement. When we use powerful cleansers – facial soap (hand soap), the presence of strong alkaline substances (sodium hydroxide, potassium hydroxide, triethanolamine) will be combined with physiological sebum saponification, causing a large loss of sebum, cortex loss keratin will fall off layer by layer (also known as skin peeling). At the same time modeling substances will be combined with the skin surface keratin, resulting in keratin degeneration roughness degeneration, the smoothness and softness of the skin decreased.
Of course there are soaps that add a lot of oil to do over lipid treatment and add moisturizers polyol and other substances to alleviate the shortcomings of the soap. There are types of skin and healthy skin can be used appropriately.
In addition, some brands have abandoned the “soap base” to make some mild surface activators into a solid form of “soap”. These kinds of “soaps” are different.
3, drug-induced thinning of the epidermis
Since the invention of hormone has made a great contribution to human health. However, long-term hormones on the face can bring about hormone-dependent dermatitis and induce the problem of thin epidermis.
Studies have shown that long-term hormone use (3 weeks for strong hormones and 2 months for short-acting hormones) can lead to hormone-dependent dermatitis. Long-term use of hormones can inhibit the value-added and maturation of keratinocytes in the epidermis, resulting in a decrease in protein and fat production and a decrease in epidermal layer particles causing epidermal thinning.
Three types of consequences can be produced.
(1) Increased evaporation from the epidermis, increased water loss from the skin, and dry flaking of the skin
(2) The thin epidermis increases the chance of invasion by exogenous microorganisms, and skin inflammation is induced by the proliferation of hair follicle mites
(3) Hormone induced sebaceous gland hyperplasia, while inducing hair follicle epithelial hyperplasia blocking hair follicles to form acne dermatitis
Finally, to summarize, the above factors lead to our “thin skin”, we need to carefully choose and use cosmetics and care in our daily life and care process, we can eliminate the chance of thin epidermis from the root of the problem.