Detailed analysis of harmful substances in cosmetics
For many millimeters, cosmetics are an essential element in daily life.
Cosmetics are applied to any part of the human body’s surface (skin, hair, nails, lips, oral mucous membranes, etc.) by absorption, spraying or other similar methods to achieve cleansing, elimination of bad odors, skin care, beauty and grooming products.
With the improvement of people’s living standards, the relationship between cosmetics and people’s daily life is getting closer. Nowadays, the function of cosmetics has gradually extended from simple cosmetic modification to functional aspects, and many kinds of special-purpose cosmetics have appeared.
Comparatively speaking, various brands of cosmetics such as sunscreen, anti-wrinkle, wrinkle-removing, wrinkle-removing, whitening and rejuvenating cosmetics have appeared in the domestic market one after another, providing convenient conditions for people’s skin care.
However, it is difficult to imagine that if you apply makeup every day, you will absorb two kilograms of harmful substances in one year!
This is by no means alarmist, especially in the hot summer, most of the capillaries in the whole body are open, blood circulation throughout the body is accelerated, and the absorption of harmful chemicals is increased.
Here, the author will give you a comprehensive analysis of the composition, ingredients, functions and hazards of harmful substances in cosmetics. I hope you have a deeper and clearer understanding of cosmetics after reading this.
Harmful substances in cosmetics can be simply divided into the following categories: inorganic heavy metals (including impurities), cosmetic stabilizers, organic solvents, perfumes, antibiotics and hormones.
The harmfulness of these harmful substances to the human body can be divided into the following four categories.
Irritation: This is the most common type of skin damage. It is related to cosmetics containing irritating ingredients, or the pH value of cosmetics is too high or too low, or the stratum corneum of the user’s skin is damaged.
Allergic injury: Cosmetics contain sensitizing substances, which can cause allergic users to have allergic reactions.
Infectious damage: The nutritional content of cosmetics, with a good environment for microbial reproduction.
The use of cosmetics contaminated with microorganisms can cause infectious damage to the human body, and damage to damaged skin and parts around the eyes.
Systemic injuries: Cosmetics have various raw materials, many of which have cosmetic effects, but may have multiple toxicities to the human body; some ingredients may not be toxic by themselves, but may also produce toxic substances (such as phototoxicity) during use.
These toxic components can be absorbed into the body through the skin and accumulated in the body, causing systemic body damage.
Various harmful substances in cosmetics that are harmful to health.
Lead, as a common heavy metal, is widely known for its toxicology and toxicity.
In cosmetics, lead oxides have a rich history as lead additives. For a time, lead-containing beauty products have been all the rage. In the past, royal families abroad had a preference for it.
The plum blossoms used in the Ming and Qing Dynasties were the prototype of powdered powders, among which were lead oxide.
The lead oxide powder is pure white and has strong adhesion and hiding ability. Until modern times, it was still the main component of covering products such as foundations and compacts.
Today, lead is a part of almost all industries. Titanium dioxide (titanium dioxide), zinc dioxide (zinc oxide), etc. are more used in concealer products.
However, due to the obvious concealing effect, strong adhesion, and low cost of lead oxide powder, there are still many cosmetic manufacturers, especially some Sanwu products, which still use a large amount of lead oxide as the main ingredient, which will cause great damage to the bodyharm.
In addition, in some cosmetics, due to the impure use of raw materials, a small amount of lead is replaced in other metal components. Due to long-term use by users, lead can also cause cumulative poisoning.
At present, the state stipulates that the maximum limit of lead in cosmetics is 40 milligrams per kilogram.
Lead is toxic to all living things.
Lead and its compounds are harmful to human health through skin absorption, which mainly affects the hematopoietic system, nervous system, kidneys, renal tract, reproductive function, cardiovascular, immune and endocrine systems, and especially affects fetal health.
The main clinical manifestations are neurasthenia syndrome due to central nervous system disturbances.
Acute or subacute encephalopathy.
Loss of appetite in the digestive system, metallic taste in the mouth, lead face, gum lead, abdominal cramps, nausea, vomiting, diarrhea.
Hematopoietic system showed low hemoglobin, normal red blood cell anemia or small cell anemia, dotted red blood cells, and increased network red blood cells.
Other complications include toxic hepatitis, hepatomegaly or jaundice, and kidney damage, causing oliguria, anuria, hemoglobinuria, nephritis or renal atrophy, which may cause myocardial damage and heart failure.
There are two main forms of mercury in cosmetics: mercury sulfide and mercury chloride.
Mercury sulfide, also known as cinnabar, is a very commonly used pigment and is often used in printing ink.
In cosmetics, mercury sulfide is generally added to lipsticks, rouges, and other cosmetics. The color is bright and long-lasting, and even the solubility of mercury sulfide in water is very small. However, because the use site is the mouth and long-term use, it causes certain harm.
Hazardous coefficients of mercury chloride in developing countries under nominal terms.
Mercury chloride cosmetics are white and delicate. Mercury ions can interfere with the process of tyrosine into melanin in human skin. They are usually added to whitening, whitening, and spot removing cosmetics, especially some cheap whitening soaps., Whitening cream and so on.
These substances are inexpensive, so mercury sulfide and mercury chloride are even used by modern cosmetic manufacturers. Mercury and its compounds can penetrate the skin barrier and enter all organs and tissues of the body, mainly causing the greatest damage to the kidneys, followed by the liver and spleen, destroying enzyme system activity, coagulating proteins, necrosis of tissues, with obvious gonadal toxicity, deteriorationToxic and cytogenetic effects.
The main clinical manifestations of chronic mercury and its compound poisoning are: fatigue, fatigue, lethargy, indifference, emotional instability, headache, dizziness, tremor, accompanied by hemoglobin content and red blood cells, decreased white blood cell count, liver damage, etc.In addition, there is a decrease in peripheral sensation, a concentric narrowing of the visual field, hearing impairment and ataxia.
Mercury is generally used as an additive. If you see words such as quick-acting, instant whitening, etc. on a whitening product manual, be careful that it may contain mercury compounds.
At present, national regulations stipulate that mercury and its compounds are supplementary chemical substances in the cosmetic part, and the limit is less than 1 mg / kg as impurities.
The exception is that thimerosal (mercury sodium thiosalicylate) is considered to have good bacteriostatic effects, allowing the use of eye cosmetics and eye makeup removers, and the maximum allowed concentration is 0.
007% (as mercury).
Cadmium and its compounds are supplementary substances in cosmetic components.
The zinc compound commonly used in cosmetics, the raw material sphalerite often contains cadmium, so as an impurity component, the content in cosmetics must not exceed 40mg / kg (calculated as cadmium).
Metal cadmium is less toxic, but cadmium compounds are highly toxic, especially cadmium oxides.
Cadmium and its compounds mainly damage the heart, liver, kidney, skeletal muscle and bone tissue.
Inhibit enzyme activity.
Nickel can destroy calcium and phosphorus metabolism and participate in the metabolism of trace elements such as zinc, copper, iron, manganese, and selenium.
The main clinical manifestations are hypertension, dilatation of the heart, and death of preterm infants, leading to complications.
The role of rare earth elements itself, so no manufacturers generally use rare earths as additives.
As an impurity, cadmium mainly appears in products containing zinc oxide, such as foundations and powders.
At present, several mainstream brand-name products can be used with confidence because of the strict control of raw material procurement.
And many cheap unbranded products on the market, due to insufficient raw material purity, their products contain cadmium far exceeding national standards, so long-term use of miscellaneous brand powder should be avoided.
Strontium is the most harmful element in cosmetics besides lead and mercury.
Selenium and its compounds are widely present in nature. During the production of cosmetic raw materials and cosmetics, they are also easily contaminated by noise. Therefore, they exist as impurities.
The toxicity of selenium and arsenic compounds is related to their solubility in water. Arsenic trioxide is easily injected into water and is very toxic. It is highly toxic. Selenium has a strong affinity for proteins and a variety of amino acids.The combination of enzymes leads to loss of activity, which leads to obstacles to cell respiration and oxidation processes, disruption of cell division, and causes diseases of the nervous system, liver, kidney, capillaries, etc.
Long-term low-dose exposure can cause chronic and chronic poisoning, dizziness, headache, weakness, limb pain, nausea and vomiting, loss of appetite, pain in the liver area, bloating, diarrhea, anemia, skin pigmentation and other symptoms.
Acute acute poisoning manifests as acute gastroenteritis, shock, toxic dermatitis, liver disease and central nervous system symptoms.
Direct skin contact with arsenic can cause skin damage such as dermatitis, eczema, folliculitis, and skin keratosis. Frequent contact can cause skin cancer.
Strontium will pass through the placental barrier, causing distortion.
Arsenide is a strong hemolytic poison. After absorption, a large number of recombinant red blood cells disintegrate, and hemoglobin escapes, causing a series of hemolytic consequences.