Manual application of cosmetics to fine hair structures often results in misalignment or uneven distribution. Precise mechanical control reduces user error and ensures uniform coverage.

Manual application of false eyelashes suffers from poor alignment and adhesive contamination. Precise mechanical positioning prevents application failure and ensures hygienic reuse.

Natural eyelashes lack uniform curvature and structural retention after cosmetic application. Precise characterization and mechanical propulsion address the failure of manual methods to achieve repeatable lift and long-term shape stability.