Regarding preservatives in cosmetics, consult a professional

This is not necessarily the case, preservatives in cosmetics and preservatives in food are different substances, so it is not necessary to be allergic to cosmetic preservatives to be allergic to snacks containing preservatives. Now only Fancl is the most authentic skin care product without preservatives, and Kanebao's cosmeceutical brand FreePlus is also claimed to be preservative-free, you can check out her products**:

But the same problem is that her family's products are also packaged in large bottles, and the shelf life of 125ml emulsion is 3 months, how to use it up?

If you are very prone to allergies to preservatives, it is recommended that you use the safest fancl, after all, the capacity is small and can be used up during the shelf life. It's too expensive, but it's worth it for the sake of face, otherwise you'll keep going to the doctor and spend more money.

Also, those baby creams also contain preservatives, and it is absolutely impossible to keep them for that long without preservatives. Don't believe baby cream.

Cosmetic preservatives are more common:

Imidazolidinyl urea.

Hefenacin urea. Isothiazolinone.

Parabens (parabens).

Quaternary ammonium-15

Benzoic acid, benzyl alcohol and derivatives preservatives, alcohols and derivatives preservatives.

Benzoic acid Sodium benzoate Potassium sorbate.

Bronopol

Tricloxin (triclosan).

It is recommended to use some children's creams, such as Tianjin's Yumeijing Children's Cream, which is very good. I use it a lot, it's cheap and not expensive. Or with the perfect aloe vera gel, all good.

The preservatives in cosmetics are benzyl alcohol, benzoic acid, salicylic acid, boric acid, sorbic acid, etc., these preservatives can effectively inhibit the growth of microorganisms, and the amount of addition is also strictly regulated, which will not cause harm to **.

Benzyl alcohol: It is one of the simplest aromatic alcohols, it is phenyl-substituted methanol, and many essential oils have added this ingredient to give it a fragrance, and in addition to having an antiseptic effect in cosmetics, it can also enhance the aroma.

Benzoic acid: also known as benzoic acid, soluble in ethanol, ether and other organic solvents, is a weak acid, not easy to be oxidized, latex, toothpaste, jam and other foods have this ingredient, many cosmetics will also add benzoic acid.

Salicylic acid: It is a fat-soluble organic acid that can be used to make drugs such as aspirin, has a certain antiseptic effect, and also has a certain effect on acne, but too much use can damage the stratum corneum of the skin.

Boric acid: Boric acid is weakly acidic, can be soluble in water, alcohol, glycerin and other liquids, is a very common preservative, often used in the glass industry, sometimes added to cosmetics, play a role in preservatives.

Sorbic acid: Sorbic acid, also known as herbal tea acid, is a food additive, able to inhibit a variety of fungi, is a common preservative in food, in addition to food, sorbic acid will also be added to animal feed, cosmetics, medicines.

Imidazolidinyl urea, caprotolinate, isothiazolinone, parabens (parabens), quaternary ammonium-15

1. Cosmetic preservatives include imidazolidinyl urea, hydantoin, isothiazolinone, parabens (parabens), quaternary ammonium salts, wild-15 and other types.

2. Imidazolidinylurea. The appearance and properties are white fluid powder, with a light and characteristic odor. Hydantoin. Those that crystallize in methanol are colorless needle-like crystals, and those that crystallize from water are colorless flake crystals.

3. Isothiazolinone. After contact with microorganisms, it can quickly and irreversibly inhibit its growth, resulting in the death of microbial cells, so it has a strong inhibitory and killing effect on common bacteria, fungi, algae, etc.

4. Songwu branch paraben esters. It is an internationally recognized broad-spectrum and highly effective food preservative, and the United States, Europe, Japan, Canada, South Korea, Russia and other countries have allowed the application of paraben.

5. Quaternary ammonium salt-15. In terms of cosmetic applications, the maximum allowable concentrations stipulated by China, Europe and the United States are all high. Before the 80s of the 20th century, quaternary ammonium-15 was a widely used preservative in sanitary products and cosmetics.

Maybe the cosmetic formula is a bit jerky and difficult to understand, but with the progress of the times and modern people's attention to external beauty, skin care products do not exist all the time in life, and you need to know more. With the trend of LOHAS, many skin care brands have begun to advocate no preservatives, preservatives may be the cause of modern people's civilization diseases, or they may be the secret of our skin, whether it is good or not

1.The function of preservativesIn order to prevent these nutrients from producing bacteria and causing deterioration and corruption of skin care products, preservatives are added to skin care products to inhibit the growth and generation of bacteria, avoid deterioration of cosmetics and maintain freshness and durability.

What are the preservatives contained in skin care products? What do you think? There are a wide range of types of preservatives, including chemical preservatives, safe non-toxic preservatives and organic preservatives, the most common and most commonly discussed chemical preservatives are parabens, and there is no complete medical basis to determine that benzoates can cause cancer.

Therefore, for ** doctors, preservatives are just a situation where skin allergies are more likely to be caused. In fact, benzoic acid is good antibacterial, low and cheap, so it is widely used as a preservative in skin care products, but at present, many cosmetics add benzoic acid derivatives to avoid parabens, which is still not good for the skin. At present, many brands add organic natural plant extracts as preservative ingredients, such as:

Tea tree essential oil, which has anti-inflammatory and antibacterial effects, inhibits the growth of bacteria, will not cause harm to the human body, and is also a natural preservative commonly seen on the market. Because general skin care products are easy to deteriorate, it is difficult to be completely preservative-free, so in order to avoid ** skin, when choosing goods, allergies are recommended to choose products without added preservatives or natural preservatives.

Definition of sterilityPreservative-free products, the most important thing is that the product itself is sterile, not only the contents do not add preservatives, all products need to be manufactured in an aseptic process, solvents and bottle packaging must also be sterilized, and must be transported at low temperature after completion, or made into an ampoule to open and use it once. There are many brands that make the essence ingredients into **, the characteristics of a single use, which can avoid the problem of deterioration caused by air contact, and strictly sterilize in the process, so that there is no need to add preservatives.

Ways to avoid deterioration of skin care productsIf you want to reduce the deterioration of skin care products, you should be careful during use, use a small spatula every time you use the cream, wash it after use, and avoid digging it by hand. When the emulsion is squeezed out, the indenter should not touch the skin of the body, or open it in contact with the air for too long, buy less products with large packaging capacity, large capacity and more need to rely on a little more preservatives to maintain the freshness of the product, skin care products are best used in the current season, and only use them after the season, you should need to have a good way of preservation, if the product is not stored properly, it is likely to cause problems to the skin.

1. First of all, let's take a look at why preservatives need to be added to skin care products.

Skincare products contain a lot of organic nutrients, such as proteins, amino acids, vitamins, sugars, and vegetable gums. And these nutrients provide an excellent environment for the growth of microorganisms such as bacteria!

In the case of a large number of bacteria, skincare products can spoil quickly. Applying a skincare product that contains a lot of bacteria to your face is tantamount to using your face as a petri dish for bacteria!

Preservatives are added to inhibit the growth of bacteria and prevent the above from happening. Therefore, preservatives are commonly added to skin care products.

2. Types of preservatives.

There are many types of preservatives in skin care products, which are divided into organic acids and their salt preservatives, neutral compound preservatives, organic mercury preservatives, and quaternary amine compound preservatives.

Isn't it hard to remember? It doesn't matter, Meiya will tell you which is the safest preservative, you just need to remember this.

Among the complex preservatives, organic acid preservatives are relatively safe.

Sorbic acid and potassium sorbate are two of the most common organic acid preservatives, and they are also commonly used in food preservation, so the safety is very good, so there is no need to worry. In addition, some ingredients with good antioxidant properties, such as vitamin E and tea tree essential oil, can also be counted as natural preservatives.

There are preservatives in cosmetics, depending on your skin type, some preservatives may be allergic. How to check dangerous ingredients, there is a software that can do it, called the real me.