Table 4.

The in vitro flux (nmol/cm²/h) of 5-aminolevulinic acid (ALA) and methyl (m)ALA from oil-in-water (O/W) and water-in-oil (W/O) nanoemulsions via porcine skin

Code	ALA	mALA
Control	69.75 ± 55.87	42.57 ± 5.80
W1	180.24 ± 29.89	25.85 ± 8.53
W2	10.23 ± 0.83	2.83 ± 1.03
W3	176.14 ± 47.32	33.02 ± 5.09
O1	11.03 ± 3.92	5.72 ± 0.20
O2	1.36 ± 0.15	4.15 ± 2.65
O3	34.63 ± 8.82	7.91 ± 2.47

Note: Each value represents the mean ± SD (n = 4).