Table 4.

Effect of surfactant type on the particle size of niosomes (Mean ± SD, n = 3).

Formulation	Surfactant type	Size
T40	Tween 60	646 ± 4.54
S40	Span 40	426 ± 2.18***
B40	Brij 72	466 ± 7.32***

^* P < 0.05,

^** P < 0.01 and

^*** P < 0.001 compared to T40 formulation.