Formula separation

A portion of my product keeps separating from the final product. It sometimes looks like it curdles on emulsification and when hand stirring stays together conglomerated. What can be causing this? 
My formula consist of: 
min the water phase:
Pentylene glycol
Ectoin 
panthenol
butylene glycol 
sorbitol
niacinamide
sodium PCA 
sodium phytate 

oil phase: 
safflower 
argan 
squalane 
octyldodecanol 
tribehenin 
symbiomuls GC 
gmcy 

small amount of glycerin & Xanthan 

final phase: 
microalgae extract 
copper peptide dissolved in water 
Dermosoft 1388 eco

final ph is approx 5.2-5.5 
adjusted with citric acid solution 

colour of separated part is very slightly off clear 

If someone could please give any feedback as to what may be causing this?

Thank you in advance. 

Comments

  • GraillotionGraillotion Member
    edited October 30
    How are you emulsifying?  You mention stirring.  Please describe your process.
  • KarenKaren Member
    Percentage symbiomuls GC is 5% 
    I emulsify with a dynamic MX100 
    The longer and more high shear seems to make it separate more and when I tried by just stirring at the end after emulsification it brings it back together - if that makes sense. 
  • Karen said:
    Percentage symbiomuls GC is 5% 
    I emulsify with a dynamic MX100 
    The longer and more high shear seems to make it separate more and when I tried by just stirring at the end after emulsification it brings it back together - if that makes sense. 
    Put the other %s you've used and that'll help determine whether you've enough emulsifying agent.
    I would assume that you need a high shear initially until a grain-free emulsion is formed and continual stirring thereafter until cool.
    The separation might be because you have something that has not incorporated into the emulsion, or that your emulsion isn't stable as a result of not enough (or wrong type) or emulsifying agent.
  • GMCY can have a negative effect on viscosity and stability.
  • KarenKaren Member
    I use this emulsifier for all my emulsions and have never had any issues at all as well as the low 0.3% gmcy. The addition of the Xanthan helps to counter that. 
    I emulsify until Cream is formed and then after adding my Xanthan glycerin solution.
    I have another very similar formula that isn’t separating. So can’t understand what is happening with this one. I am well within the oil ratio for emulsifier in the formula as it can take up to 40% oils and mine is at 21%
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