Particles penetrate easily even through rough skin, like canine skin.

The main difference between emulsion and nanoemulsion lies in the size and shape of particles dispersed in the continuous phase.

The droplet size of nanoemulsion falls typically in the range 20–200 nm.

Nanoemulsion never present sedimentation problems due to its very small droplet size.

Nanoemulsion formulation requires low amount of
surfactant (5-10%) compared to microemulsion (20-25%).

Nano-emulsion technology has many applications and is used in cosmetics and topical preparations.