The most researched and best active ingredient for lashes is Myristoyl Pentapeptide-17 and it is one of the most potent ingredients ever to support eyelash growth. To be effective, MP-17 has to be listed at least the 3rd ingredient on it's ingredient list - Meaning this is the required amount studies show to work growing lashes. Myristoyl Pentapeptide-17 is very expensive and its rare that products use the right amount. For full, thick, eyelashes that really stand out, MP-17 is the most proven ingredient for stimulating hair growth in the global research market today- Myristoyl Pentapeptide-17 is #2 in our lash ingredient list.
The key is compliance, it must be applied at least once daily to see effective lengthening and fuller lashes in about 6 weeks- a little goes a long way.... and for sure can be applied the the brows for hair thickening and filling as well.