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  Alpha arbutin

  Posted by Rana_91 on May 17, 2024 at 4:10 pm

  Hi

  I made an alpha arbutin serum with these ingredients:

  Alpha arbutin 2%

  Glycerin 3%

  Propylene glycol 3%

  Sodium hyaluronate 0.5%

  Phenoxyethanol 1%

  It changed its color and turned brown.. what should i add to make it stable

  chemicalmatt replied 2 months ago 2 Members · 1 Reply
• 1 Reply

• 

  chemicalmatt

  Member

  May 21, 2024 at 12:23 pm

  Add a little bit of lactic acid to steady the pH at 5.0 - 6.0 and a bit of mannitol to inhibit redox reactions with light, oxidizers.

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