Cosmetics Formulation Development


Complex Salicylic Acid (Powder, Water-Soluble) เกิดตกตะกอน?

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Complex Salicylic Acid (Powder, Water-Soluble) precipitates?

Postby shoppingist » Sun Jun 28, 2020 8:50 pm

Ask about the recipe BHA Toner that I just tried mixing. The formula is as below:- Ingredients: 1. Complex Salicylic Acid (Powder, Water-Soluble) 5% 2. Pure-Succinic™ (Succinic Acid, High-Purity) 2% 3. EDTA 0.2% 4. Water remaining Step 1. Weigh 2, 3 put in water, stir until clear solution - -> This step is no problem. 2, 3 dissolve in water very easily 2. Weigh 1 put in water --> Complex Salicylic Acid (Powder, Water-Soluble) precipitate immediately[/b ] Question 1. Why Complex Salicylic Acid (Powder, Water-Soluble) it precipitate? Even though the website says that it is Salicylic Acid that is soluble in water. And it does not specify that it should not be used with Pure-Succinic™ or EDTA 2. BHA Toner that Salicylic Acid has precipitated, is it necessary to discard it because toner is not effective in ละลายสิวอุดตัน Thanks for the reply in advance.
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Re: Complex Salicylic Acid (Powder, Water-Soluble) flocculate

Postby staff » Sat Jul 04, 2020 7:42 pm

Hello Complex Salicylic Acid (Powder, Water-Soluble) There is no problem of incompatibility with Pure-Succinic because both ingredients can be in the same formula. And can work together The team thinks that the precipitation problem is probably caused by using Complex Salicylic Acid (Powder, Water-Soluble) at maximum rate This is the highest water solubility rate as well, because according to the manufacturer's requirements are Complex Salicylic Acid (Powder, Water-Soluble) 5% Highest solubility in water (meaning, in case of reduced water content in the formula, Complex Salicylic Acid (Powder, Water-Soluble) insoluble Another assumption is the pH of the formula, so please help members วัดค่า pH and tell me the value. If the pH in the formula is too high, there may be a problem with solubility. Complex Salicylic Acid (Powder, Water-Soluble) Low go down
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