Participants' global self‐assessment of acne improvement (numerical point system defined by investigator, high=well) | |||||
Study | Sulfur‐benzoyl peroxide | Benzoyl peroxide | Sulfur | Placebo | P value |
medium term | |||||
Vasarinsh 1969 | 1.15 | 0.66 | 0.75 | 0.53 | not report, the author did not state whether the difference is statistical significant. |