• Formulating

  HELP with sodium ascorbyl phosphate stabilization

  Posted by marimaster_3991 on September 12, 2024 at 8:57 am

  Hi there!

  I’m working with a client to solve a problem of garlic odor in their body lotion (the odor appears when the product is applied on skin), they are using SAP @0.20% and sodium metabisulfite @0.15%.

  Also the metabisulfite is lowering the pH of the product, so far I can’t stabilize it at 6.50 (because of SAP). Tbh I want to convince my client to replace sodium metabisulfite, but by what??

  Any thoughts of what could help in this case?

  Thankss

  chemicalmatt replied 2 months, 3 weeks ago 3 Members · 3 Replies

  • body lotion
  • stabilization
  • troubleshooting
  • vitamin c
• 3 Replies

• 

  formuoli

  Member

  September 12, 2024 at 12:58 pm

  I’m not sure why it’s being used at all. Do you just need a topical antioxidant? A surfactant? A preservative? There’s about 500 trillion alternatives for each.

• 

  marimaster_3991

  Member

  September 12, 2024 at 1:17 pm

  well, they are claiming vitamin C for this product, that’s why it’s been used, for it’s antioxidant properties

• 

  chemicalmatt

  Member

  September 27, 2024 at 3:29 pm

  Sodium metabisulfite is very powerful, you only need to use 0.01% in that formulation, plus being a reducing agent (anti-oxidant) it is working against the SAP activity. That solves the garlic thing and gives better efficacy same time. Cool, huh?

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