Home Cosmetic Science Talk Formulating % of ingredient in blend

  • % of ingredient in blend

    Posted by Smsii on September 8, 2023 at 1:10 pm

    Hi - I am naive in the field, so please help, i know it’s stupid to most experts! I have a formulation that contains ingredient X at 3%. The ingredient X is comprised of 45% of ingredient Y and the remaining is ingredient Z. How much ingredient Y and Z do I have in the final formulation?? What’s the calculation?

    Perry44 replied 9 months ago 2 Members · 5 Replies
  • 5 Replies
  • Perry44

    Administrator
    September 8, 2023 at 1:13 pm

    3% x 45% = 1.35% of ing Y

    3% x 55% = 1.65% of ing Z

    • Smsii

      Member
      September 8, 2023 at 1:54 pm

      Thank you so much Perry! I had been trying to compare 2 ways formulators were calculating and it was doing my head in!

    • Smsii

      Member
      September 8, 2023 at 2:15 pm

      last thing, if the ingredient Y is 100 ppm, would it be 0.01%, so we would go with 3% x 0.01%?

      • Perry44

        Administrator
        September 15, 2023 at 1:37 pm

        yes

    • Smsii

      Member
      September 8, 2023 at 2:16 pm

      @Perry44 ^ please help? (didn’t know I could tag!)

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