Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
RCT 3-armed trial	123 primary school children aged 4–12 years	Treatment-related adverse events stinging (13 children, 30.2%), flaky scalp/dry scalp (8 children, 18.6%), erythema (4 children, 9.3%) with tea tree oil flaky scalp/dry scalp (3 children, 6.8%), erythema (1 child, 2.3%) with pyrethrum	P value not reported