Cosmetics Formulation Development


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PH value of the active substance

Postby insawang.ch » Fri Jun 14, 2019 3:04 pm

When all the ingredients were mixed, it was found that In a formula with a pH greater than 6, what kind of helper should be used to adjust the pH back to 4-5, in which case Activated Resorcinol together, because when you read the product details and find that Should not use substances in the AHA group because it will affect the effectiveness of Activated Resorcinol Thank you.
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Re: PH value of active substances

Postby staff » Sat Jun 15, 2019 9:39 pm

Hello, if you want to adjust the formula to have a lower pH, choose a weak acid, for example Lactic Acid , Citric Acid , glycolic acid by adding it to the formula little by little Blend or stir until dissolved and วัดค่า pH
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Re: PH value of active substances

Postby insawang.ch » Sun Jun 16, 2019 10:58 pm

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but read the description of the product already. It is recommended not to use with AHA So what substance should I use to adjust it?
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Re: PH value of active substances

Postby insawang.ch » Sun Jun 16, 2019 11:00 pm

or in the case of prohibition AHA is Which one are you? will avoid mixing together
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Re: PH value of active substances

Postby staff » Thu Jun 20, 2019 12:53 am

Hello, we apologize that the answers and information on the web page mislead customers. Please explain as follows: Most active ingredients are not resistant to high acidity, including Activated Resorcinol but removing AHA to adjust the PH value in the formula does not mean that members have to adjust until The formula is highly acidic. But adjust side by side so that the formula has the pH in the range we want. This is the level appropriate for the active substance in the formulation (as opposed to making gel or cream formulations). AHA at It must have a low pH for AHA works at full capacity. In this case, it will be difficult to add other active substances to the formula. because the formula is highly acidic)
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Re: PH value of active substances

Postby insawang.ch » Sun Jun 30, 2019 11:55 pm

Therefore, it can be concluded that Can be used together, no problem, but should add AHA to the amount of active substance that is stable according to the data. That's right
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Re: PH value of active substances

Postby staff » Tue Jul 02, 2019 1:02 am

Hello, yes, as long as the pH of the formula is within the range that the ingredients in the formula can work. no problem
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