Powder Foundation Formulation: Achieving Long-lasting, Waterproof, Sweatproof Properties Without Magnesium Stearate

Based on the information provided, regarding substituting Magnesium Stearate in your long-lasting, waterproof, and sweatproof foundation powder formula:

• Magnesium Stearate may not be necessary if you are using silicone-coated powders, such as those in the Silk group.
• The desired properties (long-lasting, waterproof, sweatproof) are primarily achieved by other ingredients in the formula, not Magnesium Stearate.
• To achieve these characteristics, focus on incorporating ingredients like:
  • Silicone-coated or Silane-coated powders (e.g., Silk group powders)
  • Waxes (e.g., Beeswax, Polyethylene Wax)
  • Film-forming agents (e.g., Silicone Film)

Therefore, instead of finding a direct substitute for Magnesium Stearate, consider adjusting your formula to include these other key ingredients, especially if you are using silicone-coated powders.