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Making bar oil soap (NaOH+oil) requires a foaming agent in the form of whip foam. Which substance should I use? And which substance is used to make the soap harden and dissolve slowly?

Mix encapsul Salicylic powder 3% in the gel of the lan series and then precipitate. Want to know the effectiveness of Salicylic will it deteriorate or degrade performance? because when applying the white sediment, coagulates into a lump, does not absorb into the skin The white, clumping is a powder....

Ask questions about substances that help น้ำหอม air freshener with a stick of aroma sticks to slow down. Ingredients are Reed Diffuser Base (Type 1)70% with น้ำหอม scent fresh melon 30% Do I have to add anything else? To help reduce the evaporation to slow it down. This one has been tried for a whil...