Timed-Release BHA Toner Formulation and Usage Questions
Asked by: nat_ultra
On: October 01, 2016
Product Type:
Cosmetics
Question
Regarding the formulation of a Timed-Release BHA Toner, I have the following questions:
- Should a preservative be added? If so, what type and percentage are recommended?
- Should the finished product be stored in the refrigerator? What are the benefits or drawbacks compared to room temperature storage?
- Is it necessary to wait after applying the toner before applying the next product? Why or why not?
Answer
Based on the information provided:
- Preservative: Yes, it is recommended to add a mild preservative to the Timed-Release BHA Toner formulation. A suggestion is to use Mild Preserved (Ethylhexylglycerin, Caprylyl Glycol) at 1%.
- Storage: Storing the finished product in the refrigerator is acceptable but not necessary for the stability of the BHA itself, as Salicylic Acid is heat-resistant. Room temperature storage is fine. Refrigeration would only be beneficial if other heat-sensitive ingredients were included in the formula that would benefit from cold storage.
- Waiting Time: You do not need to wait a specific amount of time after applying Timed-Release BHA Toner before applying the next product. Timed-Release BHA does not significantly alter the pH, and BHA is stable across various pH levels. Any potential issues would relate to the stability or compatibility of the subsequent product, not the BHA toner itself.
