The advantages of adding methylchloroisothiazolinone to shampoo
The advantages of adding methylchloroisothiazolinone (CMIT) to shampoo mainly lie in its preservative and antibacterial properties, but it needs to be carefully evaluated in combination with its potential risks. The following is the specific analysis:
Anti-corrosion effect
Methylchloroisothiazolinone is an efficient preservative that can effectively inhibit the growth of microorganisms in shampoos and extend the shelf life of the products. Shampoo is prone to contamination by microorganisms such as bacteria and fungi during use. Adding methylchloroisothiazolinone can prevent the product from deteriorating and ensure its quality and safety.
Antibacterial effect
Methylchloroisothiazolinone has a strong inhibitory effect on microorganisms such as bacteria, fungi and molds. Adding this ingredient to shampoo helps inhibit the growth of microorganisms on the scalp, prevent scalp infections and other problems, and keep the scalp clean and healthy.
Cost-effectiveness
Methylchloroisothiazolinone, as a relatively inexpensive preservative, can reduce production costs and enhance the market competitiveness of products when applied in shampoos.
However, the use of methyl chloroisothiazolinone also has certain risks and limitations:
Irritation: Methylchloroisothiazolinone has a certain degree of irritation to the skin. Long-term use or high concentration exposure may cause symptoms such as skin irritation, redness, and itching. For people with allergic constitutions, it may become a trigger for scalp allergies.
Content limit: According to relevant regulations, the maximum allowable concentration of a mixture of methylchloroisothiazolinone and methylisothiazolinone with magnesium chloride and magnesium nitrate (the ratio of methylchloroisothiazolinone to methylisothiazolinone is 3:1) in shampoos is 0.0015%, and it can only be used in rinse products. The maximum allowable concentration of methyl isothiazolinone alone in shampoo is 0.01%, and a mixture of methyl chloroisothiazolinone and methyl isothiazolinone cannot be used simultaneously with methyl isothiazolinone alone.
