Text///Miki；; ; This article thanks Dr. Dai Changlong for providing professional consultation.
Skin is the outermost protective film of human body, but it can't stop all foreign objects. If you are exposed to toxic substances frequently, it may enter the body through the skin, and the result is that it is difficult to excrete! How to protect skin and keep healthy? Let dermatologist Dr. Dai Changlong answer your questions!
What is "transdermal toxicity"?
The so-called transdermal toxin is a chemical toxin that enters the body through the skin and then diffuses and accumulates through blood and lymph. When chemicals come into contact with the skin, about 0.5% of them will penetrate into the skin through the gaps between keratinocytes, sweat glands or hair follicles, and some toxins may remain in subcutaneous tissue, even enter the circulatory system through blood vessels and lymphatic vessels and accumulate in the body. In the long run, it may not only cause cytopathy, endanger health, and even cause cancer.
"Transdermal toxins are completely different from toxins that enter through the mouth! Dr. Dai Changlong explained that because the liver has detoxification function, more than 90% of the toxins eaten into the stomach through the mouth can be metabolized and decomposed; However, transdermal toxin can only excrete 10%, which takes a lot of time. Perhaps the original toxin has not been eliminated, but the skin has absorbed new toxins through contact, so it has accumulated continuously for a long time. So some people seem to have no pain, but suddenly find themselves suffering from major diseases such as cancer, which is probably caused by accumulated transdermal toxicity. This is the biggest concern of transdermal toxicity.
Transdermal toxicity is everywhere, and excessive exposure will be harmful to health.
In our daily life, which items may contain transdermal toxicity? Dr. Dai Changlong said that these chemicals include fluorescent agent in laundry products, surfactant in cleaning products, silicone in some shampoos, essence and fixative in perfume or hair gel, triclosan added during the processing of toothpaste or facial cleanser, and formaldehyde hidden in daily necessities such as furniture and clothes.
The most direct reaction of human body to transdermal toxicity is "skin allergy", such as redness, itching or acne. Although the initial impact on the human body is not great, the long-term cumulative damage is terrible. In addition, because chemicals invade through the weak parts of the stratum corneum, reproductive organs with relatively thin skin are the easiest to absorb toxins, and their absorption rate is even 30 ~ 40 times that of other parts. Take formaldehyde as an example, it may change hormones in the body, affect the reproductive function of men and women, and then lead to infertility. It may also be easily transmitted from the placenta to the fetus, leading to teratoma and various diseases.
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A detailed consultation, a detailed investigation of the cause
Transdermal toxicity may be the culprit of skin diseases.
How to distinguish, diagnose and treat such a horrible transdermal poison? Dr. Dai Changlong pointed out that when patients find that there is something wrong with their skin, they usually go directly to a dermatologist. In addition to treatment according to symptoms, doctors will also scrutinize the causes through detailed inquiry, including whether the living environment and things that patients often contact may contain toxins, judge whether skin problems are caused by "endogenous" factors or "external contact" factors, and then give correct treatment. For example, if patients use cleaning products or skin care products for a long time, doctors will ask patients to take the products to the clinic, or provide a list of ingredients, and then give further suggestions.
Although it is difficult to eliminate toxins accumulated in the body, we can still work hard from now on to avoid further contact with harmful substances. Dr. Dai Changlong said that there was once a patient who used a certain brand of shower gel for a long time. Although there was no discomfort, the epidermis showed symptoms similar to xerotic dermatitis, so he suggested that patients stop using all cleaning products first and only rinse with water. In this way, it can clean the skin without giving people too much burden.
Four principles effectively reduce the probability of exposure to toxins
"Transdermal toxicity is everywhere, pervasive, and almost impossible to prevent in life! Dr. Dai Changlong said that the easiest way to eliminate transdermal toxicity is to "reduce desire" and reduce unnecessary shopping behavior, which can reduce the chance of exposure to transdermal toxicity in life. If it is really impossible to reduce the desire to buy, Dai Changlong suggested following four principles:
First, choose the right product and know the ingredients.
When choosing products, we should give priority to brands with good reputation, or take pure natural products with little addition as the main option. For example, handmade soap can be used for washing face, bathing and washing hair, and household soap can be used for washing dishes, which can reduce the chance of skin contact with poisons. In addition, people can also inquire about the ingredients themselves or consult professionals in related fields to confirm whether the products contain chemicals harmful to health and avoid misuse of dangerous products.
Second, do a skin test before buying.
Everyone's reaction to the product is different, and the coping style is naturally different. Taking skin care products as an example, people can first smear the test products on the inside of their arms to see if there are redness, allergies and other reactions. If they feel uncomfortable, they won't buy it. If you find skin problems after purchase, you should immediately consult a dermatologist and choose a suitable product.
Third, shorten the use time and frequency.
For example, when washing your hair, don't let the shampoo stay on the scalp for too long, try to clean it, or use the same can of lotion once every 2 ~ 3 days instead of once a day, which will shorten the time and frequency of use and reduce the possibility of toxin absorption.
Four, different brands should take turns to use.
Don't be too loyal to a brand. Whenever the product is used up and needs to be replenished, you can try to switch to other brands, and you can also spread the risk of skin poisoning.
"Prevention is better than cure" is a cliche, but it is the only way to resist all diseases. As long as we pay more attention to the details of daily life, we can reduce the chances of contacting transdermal drugs, further avoid the crisis of diseases and defend our health!
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Dr. Dai Changlong
Education: Doctor of Medicine, Department of Dermatology and Medical Beauty Research, China Medical University | Master of Dermatology, Fuwei Jiayi Hospital | Dermatologist and lecturer, Ministry of Education, Chengda and Geriatric Medical College.
Specialty: Dermatosis Treatment | Medical Laser Phototherapy | Beauty Micro-injection
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