Mixing Pure-Bakuchiol and DMI into Cica Sleeping Mask Base

Yes, you can mix Pure-Bakuchiol 1% and Dimethyl Isosorbide (DMI) 3% into the Cica Sleeping Mask Base.

Adding DMI at 3% is beneficial as the description for Pure-Bakuchiol specifically recommends using DMI at 2-3% to help enhance its penetration into the skin for maximum efficiency.

However, there are a couple of important points to consider:

• pH Adjustment is Necessary: The description for Pure-Bakuchiol states that if the formula contains water (which the Cica Sleeping Mask Base does), the pH must be adjusted to be below 6.5 (ideally in the range of 3.5-6.5). Bakuchiol can deteriorate at higher pH levels, so adjusting the pH is crucial for maintaining its stability and effectiveness.
• Preservative is Recommended: The Cica Sleeping Mask Base is preservative-free. When adding additional ingredients to a preservative-free base, it is highly recommended to add a suitable preservative to the final mixture. This is important for preventing microbial growth and ensuring the safety and shelf life of the product.

Mixing Method:

Simple stirring should be sufficient to incorporate the Bakuchiol (which should be dissolved or dispersed with the DMI first) into the Cica Sleeping Mask Base. The base is designed to accept additional ingredients easily. Avoid using high heat during mixing, as excessive heat can affect Bakuchiol.

Separation:

Adding 1% Bakuchiol and 3% DMI to the base is unlikely to cause significant separation issues, especially since DMI is a good solvent and helps integrate ingredients. However, it is always best to observe the stability of the final mixed product over time.

Additional Recommendation:

The description for Pure-Bakuchiol also suggests adding a chelating agent, such as Disodium EDTA 0.1%, to help capture metal ions and further improve Bakuchiol stability.

For long-term storage of the final product, keep it in a sealed, opaque container away from light and heat, preferably in the refrigerator, to help maintain the stability of Bakuchiol.