Is it necessary to use preservatives?
First, the use of preservatives in cosmetics primary role is to prevent the growth of microorganisms in the product, the nature of skin care products to maintain stability, and opening the lid after use non-perishable. The more water the more need for skin care products, preservatives, such as lotion, emulsion, ointment or wax while the closer, the bacteria more difficult to survive, relatively small demand for preservatives. In addition, the preservative products to reduce the raw material storage, Cosmetics material production, bottling products in the erosion potential of micro-bacteria is also beneficial.
2, preservatives, will stimulate the skin?
Unless there is a very sensitive skin or contact dermatitis condition, usually a small amount of preservative does not cause skin irritation, but does not rule out some manufacturers to extend product shelf life, and the use of the controversial preservative, such as benzene acid esters preservatives (many brands will promote healthy skin care specially marked “Parabens free benzoic acid esters do not add”). In addition, due to the complexity of the cosmetic product formulation, the active ingredient will need some special preservative, such as peptide class, unsaturated fatty acids, so you may find medical use for sensitive skin beauty products, astaxanthin usually a relatively simple formula, to reduce the amount of preservatives. Usually conditions, in order to ensure the safety of cosmetics, but also not have more than three kinds of preservatives added.
3, the skin damage caused by preservatives on what?
Excessive or inappropriate preservatives will make immature epidermal cells, loose, resulting in thinning of the epidermis, vulnerable to external stimuli, defense power drops; can damage cell DNA, the skin gradually loses its elasticity, easy to produce relaxation, fine lines ; but by the preservatives will continue to damage the skin cells reproduce defects, so that the skin is getting worse.
4, claiming that the product does not contain preservatives really no added?
Countries is not entirely uniform standard of preservatives, such as the EU cosmetics regulations promulgated Annex VI of isothiazolin-ketone are limited to the use of all within 15ppm; U.S. Cosmetic Ingredients Review (CIR) provides that in the washing products the maximum amount of 15ppm, while the maximum stay in the amount of product compared to 7.5ppm; in Japan provides isothiazolin-ketone can only be used in washing products. This also contributed to the same product in different national standards, which can be completely different degree of safety. Overall, preservatives, chemical preservatives, security, biotin non-toxic preservatives and natural organic preservatives (like preservatives) the difference between the European Union “cosmetic procedure” in Appendix VI covers five kinds of related preservatives (including hydroxy phenyl type preservative), and sometimes, many are not listed in the guide are also anti-microbial raw material role, known as the “class of preservatives” (such as some alcohols, and many essential oils and ethyl hexyl glycerin). As such Fancl preservative formulations used in the preservative is not in the state laws and regulations, minoxidil as no preservatives added. , But actually contain preservatives.
5, it may not add preservatives?
Usually take a small dose of the brand in aseptic packaging, can not use preservatives or use class formula, but in order to prevent air from entering, such products need to open the bottle within three days after you are finished; and vacuum pump against the return of packaging as to prevent air from entering, but also reduced the amount of preservatives. Avene brand recently launched a new “sterile space” concept, glutathione originally based on the vacuum nozzle to improve the original head of the “dead space” design, the nozzle always remains part of the original product, and back in use caused by pollution, The new design will not leave dead, to maintain product sterility during use.
6, how to reduce the damage of preservatives?
As mentioned above except for dermatitis or sensitive skin, in general, access to national security certification to add a small amount of preservative in cosmetics, skin will not cause excessive damage. However, the following two points to note: sensitive period in the skin, tretinoin try to choose products without preservatives or more single formula cosmetics, to reduce irritation caused by preservatives; like to mix and match cosmetics of women, try to choose the same brand, they usually choose the same preservative, preservative compound can be reduced to bring the stimulus.
7, homemade cosmetics, do not add preservatives are particularly safe?
Adding preservative to prevent not only the deterioration of the product in use or in order to reduce pollution in the production, packaging, health, and raw material contamination, the problem may be caused by deterioration, unless it is self-sterile plant, and to ensure zero pollution of raw materials, API supplier their own DIY cosmetics in the deployment process has to face many security risks, occasionally can be long-term use, it is more secure choice.