Table 2: Formulations with different chemical enhancers and respective concentrations used.

Formulation CodeEnhancerConcentration

CA1Citric acid1%
CA2Citric acid2.5%
CA3Oleic acid2.5%
CA4Oleic acid5%
CA5Isopropylmyristate5%
CA6Isopropylmyristate 10%
CA7N-lauroyl sarcosine1%
CA8N-lauroyl sarcosine2%
CA9Tween-201%
CA10Tween-202%
CA11Transcutol10%
CA12Transcutol20%
CA13Dimethyl sulfoxide5%
CA14Dimethyl sulfoxide 10%
CA15N-methylpyrrolidone5%
CA16N-methylpyrrolidone10%