Eyelash Thickening Serum Formula

To formulate a serum for thicker eyelashes, the key ingredients are peptides that help stimulate eyelash growth and strengthen the hair structure. Here are some recommended peptides:

• Long-Lash™ (Myristoyl Pentapeptide-17 & Copper Tripeptide-1): This peptide complex works to stimulate keratin genes and promote the growth of longer and denser eyelashes. Recommended usage is 5-10%. When using Long-Lash™, avoid adding Disodium EDTA or AHA to the formula as they can reduce its effectiveness.
• Biotinyl-GHK (Biotinoyl Tripeptide-1): This peptide binds to hair proteins and helps accelerate hair growth. It can be used for both hair and eyelashes. Recommended usage is 1-3%.
• Pep®-235 (Myristoyl Hexapeptide-16): This peptide specifically stimulates keratin genes (such as Keratin 3, 19, and various hair keratins) to promote thicker and fuller eyelashes. Recommended usage is 2-10%.

For the serum base, you can use a simple water-based formula. Mix the chosen peptide(s) into the water phase, ensuring the temperature is below 40°C to avoid damaging the peptides. Apply the serum directly to the base of the eyelashes for best results.

Combining one or more of these peptides in your serum formulation can help achieve thicker and fuller-looking lashes.