How to preserve hot process liquid soap ?by both chemical and natural way.
)if chemical means how much grm I need to take for *100grm of shampoo base + Required quantity of water to dilute*?
Types of preservative,and their quantity .
) if natural preservatives means their quantity used for *100grm of shampoo base + Required quantity of water to dilute*.
Types of natural preservative and their quantity.
Pls sir
Generally the shampoo base you buy already has preservatives. Sles based shampoo has parabens as preservatives and sulphate free has potassium sorbate etc., For natural shampoo, a preservative is not necessarily needed as it is a self sustaining emulsion like CP Soap