Calculating Ingredient Percentage and Quantity in Cosmetic Formulas
Question
How do I calculate the amount (in grams or ml) of each ingredient needed for a cosmetic formula given in percentages, and how does this relate to the standard package sizes of the raw materials? For example, if a formula lists an ingredient at 5%, how do I determine the quantity needed to make 100 grams of the final product, considering the ingredient is sold in specific weights or volumes (e.g., 2 grams or 50 ml)?
Answer
Hello,
I understand you're still confused about calculating percentages in formulations. Let me explain further:
The percentage (%) in a cosmetic formula refers to the proportion of that ingredient relative to the total weight of the final product. It does not refer to the quantity of the ingredient as sold by the company.
For example:
- If the formula specifies B3 5% and you want to make 100 grams of lotion, you will need 5 grams of B3 (5% of 100 grams).
- If the formula specifies RoseHip 5% and you want to make 100 grams of lotion, you will need 5 grams of RoseHip (5% of 100 grams).
The quantities sold by the company, such as Alpha Arbutin 2 grams or Rosehip 50 ml, are standard units for purchasing the ingredients. You will need to weigh or measure the ingredients you purchase according to the amounts calculated from your formula and the total quantity of lotion you want to make.
The company cannot divide the ingredients according to the percentages in the formula you provided, as we sell ingredients in standard package sizes.
For detailed calculations on how many grams or ml of each ingredient you need for your formula and desired lotion quantity, I recommend studying the link provided by the Staff. It contains clear explanations and calculation examples.
I hope this explanation helps you understand better. If you have further questions, feel free to ask!