Solubility and Suitability of LipidSoft Lactic and LHA in Solid Lip Balm

Both LipidSoft™ Lactic (C12-13 Alkyl Lactate) and Capryloyl Salicylic Acid (LHA) are oil-soluble and are suitable for use in a solid lip balm formulation.

Here is a breakdown of their properties and suitability:

1. LipidSoft™ Lactic (C12-13 Alkyl Lactate)

• Solubility: Oil-soluble. The product description explicitly states that it is a medium-heavy ester that "can dissolve in oil."
• Suitability for Lip Balm: Highly suitable. As a liquid emollient, it integrates seamlessly into the oil and wax phase of a lip balm. It functions as a moisturizer and provides a gentle exfoliating effect (similar to Lactic Acid) without the irritation of a free acid.

2. Capryloyl Salicylic Acid (LHA)

• Solubility: Oil-soluble. LHA is a derivative of Salicylic Acid (BHA) that has been modified with a capryloyl group, which makes it lipophilic (oil-loving). This increased oil solubility is what makes it gentler and more effective for certain applications compared to standard Salicylic Acid.
• Suitability for Lip Balm: Suitable. Since it is oil-soluble, it can be incorporated into the oil/wax base.
  • Note on Usage: As LHA is a powder, it must be fully dissolved in the heated oil phase of the lip balm formulation to prevent the final product from feeling gritty. It is recommended to dissolve it in a small amount of the chosen oil (e.g., LipidSoft Lactic or another carrier oil) before combining with the main batch. It provides gentle, surface-level exfoliation for the lips.