Calculating Ingredient Weights (grams) for 20ml Formulation

Asked by: alphal3et On: June 27, 2014 Product Type: Cosmetics

Question

How can I calculate the weight in grams for each ingredient in my formulations, which are given in percentages, to make a final product volume of 20ml?

Specifically, I have formulations using an Aloe Vera Gel base with the following active ingredients:

  • Glucosamine (4%) and Vitamin B3 (2%)
  • Beta Glucan
  • Repair Activator and DMAE Bitartrate

Answer

Hello! You're asking for the amounts in grams for your formulations.

To calculate the exact weight in grams for each ingredient based on a percentage, you need to know the total weight of your final product, not just the volume (20ml). The conversion from volume (ml) to weight (grams) requires knowing the density of the mixture.

Since the density depends on all the ingredients, especially the base like Aloe Vera Gel, and I don't have the tools to calculate the density or perform these formulation calculations directly, I cannot give you the precise grams for each ingredient.

However, the general formula to calculate the weight of an ingredient is:

Ingredient Weight (grams) = (Percentage / 100) * Total Product Weight (grams)

You would need to decide on the total target weight for your 20ml product (e.g., if you assume the density is close to water, 20ml would be approximately 20 grams, but this is an assumption and might not be accurate for all mixtures, especially with gels).

Once you have the target total weight, you can use the formula above for each ingredient. Remember to subtract the weight of the percentages you calculated from the total weight to find the weight of the Aloe Vera Gel needed.

For example, for the first formula (assuming a total weight of 20 grams):

  • Glucosamine 4%: (4 / 100) * 20 grams = 0.8 grams
  • Vitamin B3 2%: (2 / 100) * 20 grams = 0.4 grams
  • Total of Glucosamine and Vitamin B3 = 0.8 + 0.4 = 1.2 grams
  • Aloe Vera Gel weight = Total Weight - (Glucosamine Weight + Vitamin B3 Weight) = 20 grams - 1.2 grams = 18.8 grams

You would repeat this for the other two formulations using your chosen total weight.

If you need information about any of the specific ingredients like Glucosamine, Vitamin B3, Beta Glucan, Repair Activator, or DMAE Bitartrate, I can try to search for them using my tools.