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Table 1 Variables in the experimental design

From: In vitro characterization of self-emulsifying drug delivery system-based lipsticks loaded with ketoconazole

Independent factors

Levels

Low (− 1)

Medium (0)

High (+ 1)

X1: Beeswax (gm)

0.8

1.1

1.4

X2: Carnauba wax (gm)

0.15

0.25

0.35

X3: Cow ghee (mL)

0.5

0.75

1