Cosmetics Formulation Development

I'm currently using glydent plus for my hair treatment (1% used amount) and glydent and shampoo (1% used amount). กันเสีย It's not paraben or natural, please suggest. Yes, thank you very much.

Hello, in the shampoo formula, I recommend Mild Preserved Eco 1% (can claim that the formula is Preservative-Free or without สารกันเสีย can be) in the water formula. without สารชะล้าง or agent or สารสร้างเนื้อเจล /cream any recommend Phenoxyethanol SA 1% because it is directly soluble in water, if interested สารกันเสีย Nature recommends studying information and limitations. use NaturePreserve™ (initial: the formula will must have a pH of less than 6