Home Cosmetic Science Talk Formulating % of ingredient in blend

• # % of ingredient in blend

Posted by 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?

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

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

September 15, 2023 at 1:37 pm

yes

• ### Smsii

Member
September 8, 2023 at 2:16 pm