What are the characteristics of preservatives in cosmetics
A preservative is a substance that prevents the growth of microorganisms in a product. The effect of preservatives on microorganisms can only be produced when they are in direct contact with microbial cells in sufficient concentrations. Preservative manufacturers What are the characteristics of preservatives in cosmetics? The following points:
1, should be effective for a variety of microorganisms;
2, soluble in water or commonly used cosmetic ingredients;
3, should not be toxic and skin irritation;
4, in a large temperature range should be stable and effective;
5, should not produce damage to the appearance of the product coloring, fading and odor phenomenon;
6, should not react with the organic matter in the formula, reduce its effect;
7, should be neutral, at least should not make the pH value of the product significantly change;
8. It should be affordable and accessible.
