how to reduce the viscosity of hair dye

here is my formulation

water phase

xanthan gum-0.015g
propylene glycol- 0.15g
etidronic acid- 0.005g
sodium sulfite- 0.02g
ascorbic acid-0.05g
SLS- 0.016g

oil phase

cetearyl alcohol- 0.3 g
stearic acid- 0.0816g
palmitic acid- 0.0784g

i tried to formulate without the dye part. the emulsion is little viscous. how to reduce the viscosity???


  • also i tried adding glycerine. but the emulsion is destabilized after one week of storage. 
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