Adolescent girls' reproductive health is often overlooked in Indonesia, particularly regarding genital hygiene. Proper genital hygiene behavior is important to prevent reproductive health problems during adolescence. This study aimed to analyze the impact of education through demonstrations using vaginal hygiene kits on genital hygiene behavior among adolescent girls at SMP Negeri 1 Mojoanyar. This study used a pre-experimental design with a One Group Pre-Test Post-Test approach involving 30 seventh-grade students selected through purposive sampling. Data were collected using questionnaires measuring knowledge, attitudes, and hygiene practices, and were analyzed using the Wilcoxon test. Before the education intervention, 50% of respondents had insufficient knowledge, 53.3% had negative attitudes, and 80% demonstrated poor hygiene practices. After the education intervention, 80% of respondents had good knowledge, 90% showed positive attitudes, and 93.3% demonstrated improved hygiene practices. The Wilcoxon test showed a significant difference before and after the education intervention (p = 0.000; ? < 0.05). These findings suggest that education using demonstrations with vaginal hygiene kits may improve genital hygiene behavior among adolescent girls at SMP Negeri 1 Mojoanyar.
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