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Hi ! I worked with this RM. esthetician922 said:

Do you think it’s all hype? 

Not sure what u r asking about… 

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@Perry did the salt curve analysis. I needed 2.4% of betaine to get the viscosity in spec. (total was listed as 6% on the formula - I know this is a huge amount). I got the viscosity and then when I added sodium citrate the batch thinned out. 

removing benzyl alcohol did not change anything. Apparently, this is not the issue with that.. 

@ozgirl why is it not great to use Sodium Citrate for pH adjustments? From the manufacturing point of view, it’s easy to use for compounders. 

You are right, it’s pointless to have citric acid in this formula if we aim for pH 5.0-5.5…I moved Sodium Citrate to the water phase where is added at the start and removed citric acid… we will see what I can get… 

@Belassi I discussed the use of Sodium Benzoate with my supervisor. Was thinking to replace those preservatives with Potassium Sorbate & Sodium Benzoate combination, but apparently Sodium Benzoate is an irritant and the customer does not want this in the formula… we don’t mind the yellow colour as the fragrance blend used gives the batch a yellow colour anyway. 

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@klangridge thank you very much for your advice. I will make the batch without the benzyl alcohol and see what I get. Sure, I can microtest the batch too. 

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Ingredients are: water, citric acid, potassium sorbate, phenoxyethanol, cocamide DEA, ammonium lauryl sulphate, cocamidopropyl betaine, sodium citrate, jojoba oil, olive oil, benzyl alcohol, glycerine BP grade, tea tree oil, fragrance.