pH Adjustment for Acidic Ingredient in Serum
Question
When using 2% of the acidic ingredient Wrinkle-Fill™ (Acetyl-Tyrosine) in a serum formulation, is it necessary to adjust the pH, or is it not a major concern?
Answer
Based on the product information for Wrinkle-Fill™ (Acetyl-Tyrosine), it is indeed acidic. The description states that at a concentration of 2.5% in water, the pH is in the range of 2-3.
When formulating a serum using 2% Wrinkle-Fill™ (Acetyl-Tyrosine), you will likely need to adjust the pH. A pH of 2-3 is quite low and may cause skin irritation or affect the stability of other ingredients in your serum formulation.
For a typical cosmetic serum, the final pH should generally be adjusted to a range that is compatible with the skin, usually between 4.5 and 6.5, depending on the specific formulation and other ingredients.
Therefore, after adding Wrinkle-Fill™ to your serum formulation, you should measure the pH and adjust it upwards using a suitable pH adjuster (like a dilute sodium hydroxide solution) until it reaches your desired skin-compatible range.
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