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What is the pH range of hydroxypropyl methylcellulose added to shower gel?
Hydroxypropyl methylcellulose (HPMC) is often used as a thickener, emulsifier and stabilizer in shower gels. The selection of pH value will be affected by many factors, including the nature of other ingredients in the product formula and the desired product characteristics.
Generally speaking, the applicable pH range of HPMC in shower gel is approximately 4.0 to 8.0. This range can meet the usage requirements of most shower gels and ensure the stability and effectiveness of HPMC.
It is important to note that the specific optimal pH range may depend on the specific product formulation and manufacturer recommendations. Therefore, it is still recommended that you refer to the product formula instructions or contact the manufacturer for accurate technical guidance during use.