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Paraben: Benzoate has an inhibitory effect on bacterial growth and is widely used as a cosmetic preservative. It is used in cosmetics, bath products, body deodorants, shampoos and cleansing products, and is also included in some foods or medical products. Studies in recent years have shown that parabens have the potential to activate estrogen activity and therefore increase the risk of breast cancer. Parabens are absorbed by the skin and are found in tumor biopsies of certain breast cancer patients. Synthetic colors: If you see FD&C or D&C on the ingredient description, it means that artificial color is added. The letter F stands for food and D&C stands for medicines and cosmetics. This pigment is mostly synthesized from petroleum or coal tar. Synthetic pigments are carcinogenic, irritating to the skin, and can cause ADHD (Children with ADHD) in children. The EU has banned synthetic synthetic pigments. Fragrance: Fragrance can cause allergies, dermatitis, asthma, and potential threats to the reproductive system. Many products are supplemented with fragrances such as perfumes, toilet waters, conditioners, shampoos, bath products and moisturizers. Phthalates: A substance used to improve the stability of plastic products and maintain softness. It is added in many products. The benzoates used in cosmetics and personal care products are mainly: dibutyl phthalate added to nail polish, diethyl phthalate added to perfumes and lotions, and hair gel. Dimethyl phthalate. Terephthalate is a type of endocrine disruptor that increases the risk of breast cancer, affects the early development of breasts in women, and causes defects in the reproductive system of men and women. Triclosan or triclosan: Triclosan is widely used as an antibacterial agent and is an endocrine disruptor, especially for thyroxine and reproductive hormones, and is irritating to the skin. Studies have found that triclosan can cause bacterial resistance, and there is not enough evidence to suggest that antibacterial soaps containing triclosan are better than ordinary soaps. Triclosan may be present in toothpaste, antibacterial soaps and body deodorants. Sodium lauryl sulfate (SLS) and lauryl ether sulfate (SLES): These two chemicals are used as surfactants and can be found in 90% of personal care products and cleaning products on the market. SLS is irritating to the skin, lungs and eyes. The main concern with SLS is that he may react with other chemicals to form a carcinogen, nitrosamines. This compound can cause damage to the kidneys and respiratory system. SLS and SLES are found in shampoos, shower gels, facial cleansers, mascaras and acne-removing products. Toluene: A petrochemical product extracted from petroleum and coal tar. On the ingredient list, it is mainly marked with the following names: benzene, toluene or phenylmethane or methylbenzene. Toluene is a strong solvent that dissolves paint or paint dilute paint. Irritating to the respiratory system, causing nausea and irritation to the skin. Pregnant mothers should avoid contact with toluene as much as possible, which may cause damage to the baby's embryos. Toluene is toxic to the immune system and can be found in nail polish, nail products, hair dyes, and rinses. Propylene glycol: Propylene glycol is an organic substance commonly used in skin conditioning agents that is irritating to the skin and penetrating. Studies have shown that propylene glycol can cause dermatitis and urticaria, and for sensitive people, an immediate concentration of less than 2% can also induce allergies. It is found in moisturizers, sunscreens, cosmetics, conditioners, shampoos and hair gels. Chemical sunscreen: This type of chemical acts as a sunscreen medium and absorbs ultraviolet light. These chemicals are considered to be a class of endocrine disruptors that are easily absorbed by the body, which can cause cell damage and induce cancer. Usually the names of such substances are: benzophenone, p-aminobenzoic acid (PABA), avobenzone, humulizate or homosalate, methoxy group. Citrate (methoxycinnamate). It can be found in sunscreens based on chemical sunscreens. Compared with chemical sunscreen, physical sunscreen is safer. Unlike chemical sunscreen, which absorbs ultraviolet light, physical sunscreen uses titanium dioxide and zinc oxide as sunscreen particles to block ultraviolet rays by reflection and scattering to achieve sunscreen protection because it is not easy to produce chemicals. Reacts, so it is milder and safer to the skin. Mineral oil: oil is the basic ingredient in cream cosmetics. Generally speaking, the oil used in skin care products can be divided into vegetable oil, mineral oil, animal oil and synthetic oil. The most commonly used are vegetable oil and mineral oil. It plays a vital role in skin nutrition and moisturization. Mineral oil, also known as paraffin oil, is a colorless and odorless mixture obtained by petroleum refining and bitumen. The mineral oil is lower in cost than vegetable oil. However, due to poor permeability, it is easy to cause skin pores to clog and hinder skin respiration. The secretion of sebum and the metabolism, which leads to the prevention of acne, oily skin and easy acne.


Author: Nikola Tesla
Link: https://www.zhihu.com/question/266612269/answer/318323660
Source: Knowing