Home Cosmetic Science Talk Formulating General Maximum Variability in pH Level in a Packaged O/W Emulsion Product?

  • Maximum Variability in pH Level in a Packaged O/W Emulsion Product?

    Posted by Spadirect on October 12, 2019 at 4:09 am

    After an O/W emulsion, like a lotion, has been determined to be fully stable and then packaged in perfectly adequate HDPE plastic packaging; how much, if at all, might the pH level (+ or -) of the lotion naturally vary over a six month, one year, and one and a half year time frame during which there are no storage or temperature variation issues and the HDPE plastic packaging performs well?

    I would greatly appreciate any and all answers, comments or discussion.  Thanks!

    bill_toge replied 4 years, 4 months ago 2 Members · 1 Reply
  • 1 Reply
  • bill_toge

    Member
    October 12, 2019 at 8:51 pm

    that depends on what’s in the formula

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