Electrolyte Resistance and Leave-on Application of Olivem 1000

Olivem 1000 (Cetearyl Olivate, Sorbitan Olivate) is a popular natural-derived, non-ionic emulsifier. Here are the answers to your questions:

1. Electrolyte Resistance

Olivem 1000 has good resistance to electrolytes. Because it is a non-ionic emulsifier, it is generally more stable in the presence of salts or active ingredients with high electrolyte content compared to anionic emulsifiers.

• It can handle a wide pH range (3-12).
• However, if your formula contains a very high concentration of electrolytes, it is recommended to add a stabilizer such as a polymer thickener (e.g., Xanthan Gum or other gel makers) to ensure long-term stability of the emulsion.

2. Use in Leave-on Products

Yes, Olivem 1000 is perfectly suitable and very commonly used for Leave-on products.

• It is widely used in facial creams, lotions, and serums.
• It provides a "Liquid Crystal" structure that mimics the skin's lipid barrier, helping to deliver moisture and active ingredients effectively into the skin.
• It does not leave a "soapy" effect (white streaks) when rubbed onto the skin.

Usage Recommendations:

• Usage Rate: 3-8% (3-5% for lotions/serums, 6-8% for thicker creams).
• Mixing Method: Heat the oil phase containing Olivem 1000 to approximately 75-80°C before mixing with the water phase (at a similar temperature).