Development of Novel Topical Cosmeceutical Formulations from Nigella sativa L. with Antimicrobial Activity against Acne-Causing Microorganisms

Table 2

Antibacterial activity in three topical gel formulations and positive and negative controls against S. aureus and P. acnes.

Microorganism	Antibacterial activity in terms of diameter of the zone of inhibition (mm)
	F1	F2	F3	Positive control	Negative control
S. aureus	8.0 ± 0.0	9.3 ± 0.5	10.6 ± 0.5	8.3 ± 1.5	0.0 ± 0.0
P. acnes	8.0 ± 0.0	8.0 ± 0.0	9.0 ± 0.0	10.5 ± 0.7	0.0 ± 0.0