Calculating Ingredient Percentages in Cream Formulation

Hello! Calculating cream formulations and determining the percentage of each ingredient is a complex process that depends on many factors.

Generally, the percentage of ingredients in a cream formulation is determined by:

• Function of the ingredient: Each ingredient has a different role, such as a humectant, emulsifier, thickener, preservative, or active ingredient. Each has a different optimal usage rate.
• Desired product properties: The texture, feel, stability, and efficacy of the cream depend on the amount and type of ingredients used.
• Information from ingredient suppliers: Suppliers often provide recommended maximum and minimum usage rates, as well as safety data for each raw material.
• Regulatory requirements: Some ingredients have legal restrictions on their usage amount in cosmetics.
• Ingredient compatibility: Some ingredients may not be compatible when used together or may affect the stability of the formulation.

For calculation, formulations are usually calculated as a percentage by weight of the total formula. The sum of the percentages of all ingredients in the formula must equal 100%.

For beginners, studying basic formulations or reliable sample formulas and understanding the function and properties of each ingredient is a good starting point. Experimenting by adjusting quantities little by little and observing the results is also an important part of formulation development.

Since this question is about the principles and guidelines for formulation development, which requires knowledge and experience in understanding raw materials and various processes, I cannot provide a complete answer with the available tools. The advice above is just a basic overview.