Shampoo Tinting

Hello All

I have created an all natural shampoo that detangles and cleanses the hair very good. However when I make the shampoo once I add citric acid it turns white (which I like), however days later it turns yellow. What can I do to keep a white color for the shampoo? Is there an all natural colorant or ingredient I can add to preserve the color? The ingredients are listed below:

water
decyl glucoside
aloe Vera juice
coconut oil
dl panthenol
citric acid
jojoba oil
castor oil
xanthan gum
optiphen
essential oil

Comments

  • PharmaPharma Member, Pharmacist
    Does it also discolour when omitting citric acid?
    I suppose it's either aloe vera juice which spoils (an antioxidant might help) or the emulsion is not stable (formation of larger droplets -> decrease oil content and/or add a co-surfactant and/or increase xanthan). You could also try to replace aloe vera with plain water and see if the same thing happens.
    How much oils and detergent does your shampoo contain?
  • I have not tested shelf line without citric acid because the shampoo was a bit stripping without citric acid. 

    I’ve also tried it with coconut water and the same result. 

    Should I use aloe powder instead of aloe juice or is there anything I can do to prevent it from spoiling? 

    I forgot to add I use Guar aswell as the xanthan 50/50 ratio 


    Oils 4.75%
    detergent 17%
  • PharmaPharma Member, Pharmacist
    Coconut water is as fragile as aloe juice and there's no difference to aloe powder.
    Still, I suspect it's a matter of physical stability rather than microbial spoilage.
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