Adding LHA to Oil Control Gel Formula
Question
Based on the "Oil Control Gel" formula available on the website, can I add Capryloyl Salicylic Acid (LHA)? If the mixing ratio is around 5-10%, should this percentage be based on the total formula or just the water used in the formula?
Answer
Adding Capryloyl Salicylic Acid (LHA) to a Gel Formula
Yes, you can add Capryloyl Salicylic Acid (LHA) to a gel formula, but you need to consider its properties for proper incorporation.
Capryloyl Salicylic Acid (LHA) is an oil-soluble ingredient and requires heating (70-80°C) to dissolve. To add it to a water-based gel formula, you would typically need to dissolve the LHA in a suitable oil phase first before combining it with the water phase of the gel. This might require a slight modification of the original gel recipe to include a small oil component or the use of a solubilizer.
Usage Rate
The recommended usage rate for Capryloyl Salicylic Acid (LHA) is 0.5-5%. However, it is strongly recommended not to exceed 2% in a formula, as higher concentrations can cause significant skin irritation.
Percentage Calculation
The percentage for adding ingredients like LHA is always calculated based on the total weight of the final formula, not just the water content. So, if you aim for a 1% concentration in a 100g formula, you would add 1g of LHA.
