Preservative-free care products
With the advancement of the times and the modern people’s emphasis on appearance and beauty, skin care products do not exist in life all the time, but do you know that the skin care products used may actually have many unknown chemical ingredients?
With the trend of LOHAS, many maintenance brands have begun to advocate not to add preservatives.
Preservatives may be the cause of modern people ‘s civilized diseases, or they may be the secret weapon that protects our skin. Is it good?
This time, we invited Dr. Weng Wenrou, a dermatologist at Chang Gung Memorial Hospital, to ask Dr. Weng to unlock the mystery of preservatives for readers.
The function of preservatives The most important preservatives include antibacterial ingredients in addition to preservatives. Nursing products contain a lot of nutrients inside. In order to prevent these nutrients from causing bacteria and causing deterioration and corruption of maintenance products, preservatives are added to maintenance products.Inhibit bacterial growth and generation, avoid cosmetic deterioration and maintain freshness and durability.
What are the preservatives contained in skin care products?
How about (in English)?
There are a wide variety of preservatives, divided into chemical preservatives, safe non-toxic preservatives and organic preservatives. The most common and most commonly discussed chemical preservatives are parabens. Currently British scientists target breast cancer patients.In vivo cells do research and find benzoic acid residues in the cells. It is suspected that benzoic acid will cause cancer, but it is only a statistical result. Normal human tissues are not used for comparison, so there is no complete medical basis to determine benzoate.Classes can cause cancer.
Therefore, for dermatologists, preservatives are only relatively easy to cause skin allergies.
In fact, benzoic acid has good antibacterial properties, low irritation, and cheap price, so it is widely used as a preservative in skin care products. However, many cosmetic products now include benzoic acid derivatives to avoid the topic of parabens.In fact, this is still bad for the skin.
In addition, there are some chemical ingredients that are non-toxic and safe preservatives, such as trisorbic acid and potassium trisorbate, which are also one of the preservatives, but are relatively non-toxic and cause little harm to the human body; vitamin E is also manyThe brand is used as an antiseptic ingredient, because vitamin E is an antioxidant in nature, so it can keep the skin care products from oxidizing easily, and it is often used as a preservative.
At present, many brands use organic natural plant extracts as antiseptic ingredients, such as tea tree oils, which have anti-inflammatory and antibacterial effects, inhibit bacterial growth, and do not cause harm to the human body. They are also natural preservatives commonly seen on urban surfaces.
Because general care products are easy to deteriorate, it is difficult to completely eliminate preservatives. Therefore, in order to avoid irritating the skin, it is recommended to choose products without preservatives or natural preservatives for allergies when choosing products.Use of toxic, organic and safe preservatives.
Definition of sterility Preservative-free products, the most important thing is that the product itself is sterile, not just the contents without preservatives, all products need to be manufactured in an aseptic process, solvents, bottle packaging must also be sterilized, and must be low temperature after completionShipped, or made into ampoules once opened and used up.
There are many brands that make the essence ingredients into a mask. The single-use characteristics can avoid the problem of deterioration caused by air contact, and strictly sterilize during the process, so you do not need to add preservatives.
The method to avoid deterioration of skincare products. If you want to reduce the deterioration of skincare products, be careful in the use process, use a small scraper to pick up each time when using the cream, wash it after use, and avoid digging by hand; when the emulsion is extended,Do not contact the skin with the indenter, or open the product for too long in contact with the air. Buy less products with large packaging capacity. Larger and more products need more preservatives to maintain the freshness of the product.After use, use it after the season. It is necessary to have a good storage method. If the product is not stored properly, it will easily deteriorate, which may cause skin problems.
Is every preservative bad?
Or is it a matter of proportion?
Not necessarily. Preservatives are mixed with chemical and non-toxic preservatives. At present, the Department of Health stipulates that 0 can be added to maintenance products.
1% or 1% parabens ingredients, so the skin care products within the effective ingredients are approved, too much is still harmful to the human body, but some people may still be allergic to electrostatic protection agents.
A number of preservatives are added to some skin care products. At the specified concentration, different proportions of chemical preservatives, safe non-toxic preservatives and organic preservatives are added to disperse the toxicity of a single preservative and reduce harm to the human body.
Is the content of preservatives related to the expiration date of skin care products?
Is it kept longer?
Related, if the product claims no added preservatives, the use period will be short. If you want to use a long period of effect, you must add an alternative preservative. The product with a large amount is stored for a long time. Even so, it needs to be prescribed by the Department of Health.Within the concentration.
Preservatives are mostly used to preserve the product from rancidity. If you choose a product without added preservatives, you must use it as soon as possible!
However, it is recommended to try sensitive products without preservatives. Assuming good use habits, after the season is finished, do not choose a large amount of products, it is not easy to deteriorate. Doctors also recommend that you try not to choose parabens.Products to reduce the chance of skin allergies.
What does preservative-free supplements replace preservatives?
Potassium trisorbate (potassium sorbate) or potassium trisorbate (potassium sorbate) are generally used as safer preservatives, or vitamin E and tea tree oil are used instead.
And so on natural plant ingredients, with the effect of sterilizing essential oils.
What are the characteristics of ingredients that replace preservatives?
Trisorbic acid (sorbic): It is a relatively safe preservative ingredient.
Tea tree oil: it has antibacterial effect, can reduce bacterial nourishment, and replace some antiseptic and sterilizing functions.
Vitamin E: is a natural antioxidant that prevents skin and skin care products from oxidizing.
What kind of ingredients are liable to spoil?
The more water is needed, the more moisture the products are more likely to spoil, such as: lotion, lotion, cream. These concentrations require water, so it is easy to nourish bacteria. The closer it is to ointment or waxy products, because water is not needed, so bacteriaIt is difficult to survive, but these oils and waxy products may deteriorate and rancidity over time and cannot be ignored; in addition, the more nutritious ingredients are more likely to deteriorate, such as unsaturated fatty acids, which are good for the skinNutritional ingredients, but easily rancid, so many skin care products will add vitamin E antioxidants to prevent spoilage, as well as peptides, proteins, amino acids, hyaluronic acid (larger protein) are very nutritious ingredients,Anticorrosive ingredients must be added to avoid deterioration.