• Formulating

  pH STABILITY OF BETAINE AND ALLANTOIN

  Posted by Emily2001 on May 24, 2023 at 5:22 am

  I am trying to formulate an exfoliating serum in which I have used different types of AHAs, BHAs and PHAs.

  I have maintained the pH around 3.3.

  Along with acids I have used betaine, sodium pca and allantion in the formulation, but I am worried about the pH stability of betaine, sodium pca and allantoin. Please let me know in case of any known instability at lower pH or known reactions with Lactic, Glycolic, Mandelic, salicylic acid and gluconodeltalactone.

  Thanks In advance 🙂

  microformulation replied 6 months, 1 week ago 3 Members · 2 Replies
• 2 Replies

• 

  SKLChemistry

  Member

  October 10, 2023 at 5:34 pm

  The FDA doesn’t recommend AHA’s & BHA’s made with a pH below 3.5, if you’re formulating and selling this product yourself you might run into legal trouble. There are also certain warnings your skin must have. I am currently working on a similar product with the pH of 3.8 (lactic + azelaic acid) http://www.skinbyklynn.com

  

  skinbyklynn.com

  Skin By K.Lynn LLC

  The Fine As Wine Collection from SKIN BY KLYNN is designed to provide a luxurious experience to your everyday skincare routine. From the packaging & feel, all the way to the sweet and luxurious aromas of this collection... has been … Continue reading

• 

  microformulation

  Member

  October 10, 2023 at 7:24 pm

  https://www.fda.gov/cosmetics/cosmetic-ingredients/alpha-hydroxy-acids

  

  

  fda.gov

  Cosmetics Alpha Hydroxy Acids

  Remember sun protection when using these

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