Skin's got talent: why does not contain preservatives to protect skin to taste more can't I use

Friends two days before A new bought A card to protect skin to taste, with A little allergy, after A friend B mouth say: sure is you buy the product there are too many preservatives, when I was shopping XX skin care products sales and I speak preservative can lead to many skin diseases, so had to buy do not contain preservatives to protect skin to taste. What is the function of a preservative? The answer is no, the root of the problem from our misunderstanding of preservatives. If you ask a friend, what are preservative for skin care products, basically get this answer: prevent protect skin to taste bad. But preservatives a main role is: prevention of fungi and bacteria. How the bacteria and fungi into skin care products? When we open the bottle cap when contact with fingers or other tools to protect skin to taste, bacteria and fungi with our hands or tools attached on the skin care products. Skin care products as the nutrition is very high, is a hotbed of bacteria and fungi, where they can multiply. What is the harm of bacteria and fungi? Have a great opportunity through the stratum corneum, bacteria and fungi cause skin irritation. In addition the product of metabolism of bacteria and fungi reproduction will be let us allergy source, cause contact dermatitis, eczema, skin diseases. Through the preservative is added in the product, to control the bacteria and fungi, effectively protect skin care products and the role of our skin. Preservatives have harm? Preservatives have harm, of course! But it brings us benefits >. And in the big brands to protect skin to taste the added preservatives have been formula repeated experiment and test, its content and the concentration of all through strict detection and control, almost won't cause harm to our skin. Sold in the market of 'no preservatives' protect skin to taste good? These without corrosion products are not real anticorrosive, but bait-and-switch 'pseudo anticorrosive' concept. Can we call ourselves no preservatives added products most used this means: the formula itself has the function of anti-corrosion itself have anticorrosive, however, has not yet been classified as a preservative products disposable packaging. To sum up, these products still contain 'antiseptic agent. People how to select the product of preservative sensitive? It depends on the purchase of the product is used in what kind of preservatives, normally there are these: formaldehyde release of the body. Recipe name and 'double imidazole alkyl urea', 'ureide within DMDM b', 'horse', 'quaternary ammonium salt. If you are allergic to formaldehyde to release a body ', so to see the formula must be far from them. Neper esters of gold. This is a relatively safe preservatives, but if your skin has a wound, it will bring discomfort to the wound, avoid as far as possible. Different thiazole moiety ketone. If you are allergy skin, so to the formula contains the preservative products, it is easy to make allergic dermatitis of large area skin broke out. Phenoxyethanol. Many baby products will choose it as a preservative, so you'll get a high safety factor. On the blackboard to highlight: everybody when the choose and buy a product, rather than listen to sales twittering hungry, not pick up the packaging check formula of the product list, this is the most intuitive, rapid and accurate method of judging whether the product is suitable for their own. Editor: huang rui