Comments

• ngarayeva001 Member

  February 18

  1) carbomers aren’t working well with electrolyes
  2) those two grades will not work at such a low ph.
  if xanthan isn’t an option, use Sepimax Zen.
• MarkBroussard Member, Professional Chemist

  February 18

  @Abdullah:
  
  Carbopol Ultrez 30 activates in low pH systems (4.0 to 5.5).  You might give that a try.

  Chemist/Microbiologist formulating in the Organic & Naturals arena under ECOCert/Natural Products Assn/Whole Foods/National Organic Program guidelines focused skincare & haircare products. 
  
  See website for details www.desertinbloomcosmeticslab.com
• chemicalmatt Member, Professional Chemist

  February 18

  Yeesh! With lactic acid at 8.0% you'll be working in the pH 2.5 range. No acrylate thickener - doesn't matter how "Zen" - will operate at that pH.
• Abdullah Member

  February 19

  @chemicalmatti will adjust the final pH to 4-5 with sodium hydroxide
• Abdullah Member

  February 19

  @ngarayeva001 unfortunately Sepimax Zen is not available here. 
  Any other suggestions
• Abdullah Member

  February 19

  @MarkBroussard unfortunately Ultrez 30 is not available here.
  Any other suggestions
• Pattsi Member

  February 19

  if you post the choices of thickeners you have or available to you.
  maybe it's will be easier for others to suggest
• ngarayeva001 Member

  February 20

  Oh wait a second.. polyglyceryl-4 laurate and GMS... This system will lead to w/o. No acrylate based thickener would work here. Even xanthan shouldn’t. You need to reconsider the entire formula. AHA exfoliant won’t work effectively with oil as an external phase. Not sure about BHA but that’s not the point. The entire system isn’t stable and needs reworking. 
• Abdullah Member

  February 20

  @ngarayeva001 Polyglyceryl-4 Laurate has HLB 11. Why would it make w/o emulsion? 
• Abdullah Member

  February 20

  @Pattsi ;
  I have tried guar gum, HEC, HPMC. They don't make the system stable.
  
  Carbomers 980 and 940 are available. 
  
  I don't know what other options are available so i can check
• ngarayeva001 Member

  February 20

  I am wrong. I thought it’s oleate which has low hlb. Have you tried adding fatty alcohols. They often improve stability.
• Abdullah Member

  February 21

  @ngarayeva001 no i haven't tried fatty alcohol yet.
  Which fatty alcohol do you prefer?
  Cetyl or stearyl alcohol
  
• ngarayeva001 Member

  February 21

  Cetyl because has better slip but it can be argued that stearyl is slightly better for stability.
• Abdullah Member

  February 22

  @ngarayeva001 thanks 
  For stability if i use a bit more cetyl it would be equal to stearyl. They are not expensive