The direction of pull of the muscles forms a 23Â° angle relative to the visual axis in the primary position, giving rise to secondary and tertiary functions. The secondary action of vertical rectus muscles is torsion. The superior rectus is an incyclotorter, and the inferior rectus is an excyclotorter.
-Marcia. Dear Marcia, Eyelash growth serums generally contain either a prostaglandin derivative, like prescription Latisse, or over-the-counter Revitalash; peptides, like Jan Marini Growth Serum; or vitamins, like Peter Thomas Roth Lashes to Die For.
Vitamin B-3, also known as niacin, stimulates eyelash growth, eliminates dry and brittle eyelashes, improves blood flow to your hair follicles, aids in cellular reproduction, prevents your eyelashes from falling out and helps your body metabolize keratin, a protein that supports hair growth, according to Abram Hoffer, author of âFeel Better, Live Longer with Vitamin B-3.â