Usage Percentage and Formulation for LHA/BHA (Capryloyl Salicylic Acid Liquid 10%)
Question
Regarding Capryloyl Salicylic Acid (LHA) Liquid with 10% active LHA and Salicylic Acid (BHA):
- What is the maximum recommended usage percentage for LHA/BHA on the face?
- If using the
Capryloyl Salicylic Acid (LHA) Liquid(10% active LHA), how much should be used to achieve the recommended active concentration? - What type of formulation (e.g., gel, cream, toner) is suitable for these ingredients, considering potential issues like precipitation at low temperatures?
Answer
Based on the information provided, the Capryloyl Salicylic Acid (LHA) Liquid product you are asking about contains 10% active LHA.
For facial applications, the recommended maximum concentration for active LHA or BHA (like Salicylic Acid) is typically 2%.
To achieve a 2% active LHA concentration in your formulation using the 10% LHA Liquid product, you should incorporate the liquid at a rate of 20% of your total formula. (This is because 20% of the 10% active liquid equals 2% active LHA in the final product).
Using LHA or BHA at concentrations higher than 2% active ingredient is generally not recommended for facial skin and is typically reserved for treatments like wart removal.
Regarding formulation type, it is suggested to formulate with this ingredient in a water-based gel or cream base. Avoid making thin liquid formulations like toners, as LHA and BHA can easily precipitate or become cloudy at lower temperatures in such bases.
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