Preservative % suggestion for this shampoo formula
For this shampoo formula, what percentage of glyceryl Caprylate and Formalin can be used as effective preservative to keep the amount of Formalin to minimum?
SLES %9 asCAPB %3 asGlycol distearate %1
EO orange and lavender %0.3
Tetrasodium EDTA %0.2