From: Recent advances of non-ionic surfactant-based nano-vesicles (niosomes and proniosomes): a brief review of these in enhancing transdermal delivery of drug
S.no.
Type
Siz e[12]
a.
Small unilamellar vesicle
0.025–0.05 μm
b.
Large unilamellar vesicle
≥ 0.05 μm
c.
Multi lamellar vesicle
≥ 0.10 μm