Using Skin-Barrier™ with Cocamidopropyl Betaine and Mild-Wash™ in Liquid Soap

You asked about using Skin-Barrier™ (Skin Barrier Restoration) with Cocamidopropyl Betaine and Mild-Wash™ (Sodium Lauroamphoacetate) in a liquid soap formulation, and how to mix them.

Cocamidopropyl Betaine and Mild-Wash™ (Sodium Lauroamphoacetate) are both amphoteric surfactants commonly used in gentle cleansing products. They are compatible with each other and can be used together in liquid soap formulations.

Skin-Barrier™ (Skin Barrier Restoration, Skin Mimic Ceramides Liposome) is a liposomal dispersion designed to restore the skin barrier using ceramides, cholesterol, and fatty acids. It is primarily intended for use in skin care products (leave-on applications) to reduce irritation and restore moisture.

While Skin-Barrier™ can be dispersed in water, adding a liposomal ingredient like this to a liquid soap base containing surfactants like Cocamidopropyl Betaine and Mild-Wash™ may pose challenges:

• Stability: High concentrations of surfactants can potentially disrupt the liposomal structure of Skin-Barrier™, affecting its stability and potentially reducing the effectiveness of the ceramides.
• Efficacy: In a wash-off product like liquid soap, the contact time with the skin is very short. The beneficial components of Skin-Barrier™ may not have sufficient time to absorb and work effectively on the skin barrier before being rinsed away. Skin barrier repair ingredients are generally more effective in leave-on products (like creams or lotions) where they remain on the skin.

Therefore, while you can physically mix the ingredients, the compatibility and effectiveness of Skin-Barrier™ in a liquid soap formulation with these surfactants are not guaranteed, and it may not provide the desired skin barrier restoration benefits compared to using it in a leave-on product.

Mixing Instructions for the Surfactants:

1. Combine Cocamidopropyl Betaine and Mild-Wash™ (Sodium Lauroamphoacetate) in the water phase of your formulation. Both can withstand heat during mixing.
2. After mixing the surfactants and other water-soluble ingredients, adjust the pH of the mixture. Mild-Wash™ is alkaline and requires the final formula pH to be adjusted to the skin-friendly range of pH 5-6 using an acid like Citric Acid or Lactic Acid.
3. Avoid excessive stirring after adding Mild-Wash™ as it can create excessive bubbles.

If you still wish to experiment with adding Skin-Barrier™ to this base, it should be added to the water phase and dispersed. However, be aware of the potential stability and efficacy issues mentioned above. For optimal skin barrier repair, consider using Skin-Barrier™ in a leave-on cream or lotion.