AP-Base (All Purpose Base) is used to dilute the strength of other All Purpose Creams.

As an example:

If one wanted an APC to be 25% of its original strength, one could look at the chart below on the column "Percentage of Original Strength" and look down to the row with 25%.

This 25% row lists 1 Part APC and 3 Parts Base. This means whatever amount (teaspoon, pea size, dime size) of APC that is used, you want to use 3 times that amount (teaspoon, pea size, dime size) of the Base.

APC and Base Dilution Table for Benzoyl Peroxide Retinoic Acid Hydroquinone and Resorcinol

If you know the desired strength, you can use the formula below to calculate the ratio of APC/Base.

Base Per APC = (APC%/ Desired %) - 1

Example:

If you are using APBP All Purpose Benzoyl Peroxide and want a 10% strength cream instead of the 25%, we can use the formula above to find out how much Base to use for each part of APBP.

APC% = 25% (Strength of APBP)

Desired% = 10% (The Strength We Want)

Using the formula above:

Base Per APC = (APC%/ Desired %) - 1

Base Per APC= (.25/.10) - 1 = (2.5) - 1 = 1.5

So this means, if we have a 25% strength APC and want a 10% strength mixture, we would use 1.5 times the amount of base as whatever APC we had and mix them together.

Hate math? No Sweat! Just Contact Us and we'll be glad to help!

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