Eyelash Serum Formulation with Long-Lash, Pro Polymer, and Eye Preserved

Asked by: chalisa.cookie On: June 17, 2015 Product Type: Cosmetics

Question

How to formulate an eyelash serum using Long-Lash™ 10%? What are the recommended percentages for Pro Polymer (Acrylate Crosspolymer) as a thickener and Eye Preserved (Polyaminopropyl Biguanide) as a preservative, and what is the mixing procedure, considering potential compatibility issues?

Answer

Eyelash Serum Formulation with Long-Lash™

Based on the discussion, a simple and effective formulation for an eyelash serum using Long-Lash™ can be created with the following components:

  • Long-Lash™: 10%
    • This is the key active ingredient for stimulating eyelash growth.
    • Apply the finished serum to the base of the eyelashes, not just the lashes themselves.
  • Pro Polymer™: Start at 0.5% and adjust as needed.
    • This acts as the gel base.
    • Adjust the percentage to achieve the desired viscosity, such as a liquid suitable for an eyeliner brush.
    • Note from the product description: Pro Polymer is incompatible with electrolytes like Eye Preserved. Add Eye Preserved last and be prepared to potentially add slightly more Pro Polymer if the viscosity decreases.
  • Eye Preserved™: 1.0%
    • This is recommended as a safe preservative for use around the eyes.
    • Add this ingredient in the final step of mixing, as it is an electrolyte and can affect the gel's viscosity.

General Mixing Method:

  1. Prepare the water phase.
  2. Slowly sprinkle Pro Polymer™ into the water phase while stirring gently until a gel forms. Avoid high-speed blending which can damage the polymer.
  3. Add Long-Lash™ and mix well.
  4. In the final step, add Eye Preserved™ and mix until incorporated. If the gel thins out, you may need to add a small amount of additional Pro Polymer™ and mix until the desired consistency is restored.

Always perform a small test batch first to ensure the desired texture and stability before making a larger quantity.

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