Lightweight Serum Thickeners

To create a lightweight, non-sticky, fast-absorbing serum with approximately 65% water, you have several excellent options for gelling agents and thickeners.

Regarding your question about Xanthan Gum, using 1% is a common starting point for many gel and serum formulations. For a lightweight texture with 65% water, 1% might be sufficient, but you can adjust the concentration within the recommended range of 0.1-2% to achieve your desired viscosity. Different types of Xanthan Gum, such as the "clear gel type, smooth texture," can offer slightly different feels.

For a truly lightweight, non-sticky, and fast-absorbing serum, consider these alternatives or additions:

• Silky Serum Base (Face/Eye): This base is specifically designed to create light, soft, smooth, and quickly absorbed serums. It works well with high water content (30-90%) and is ideal for achieving the texture you described.
• AnyGel™: This water gelling agent provides a non-greasy texture that feels instantly absorbed and dries quickly on the skin. It's also resistant to acids, alkalis, and electrolytes, making it quite versatile. It is typically used at 1-2.5%.
• Sepimax Zen: This is a highly tolerant thickener that creates a gel texture in the water phase. It's resistant to salt and pH variations and is used at 0.5-2%. It can help create a stable gel.
• Light Cream Maker™: While also an emulsifier, it can be used as a thickener in water-based formulas. It helps create a light, smooth, non-gooey texture that absorbs easily. Recommended usage is 0.5-3%.

You might also consider adding ingredients for enhanced skin feel:

• Dimethicone (Very Light/5, Low-Odor): If your formula includes an oil or silicone phase, this can contribute a soft, smooth, non-sticky feel.
• Pullulan (Low Viscosity): At lower concentrations, it acts as a thickener and can contribute to a lightweight feel.

Experimenting with different thickeners and concentrations is key to finding the perfect lightweight, non-sticky serum texture for your formula.