Enhancement of Students’ Knowledge Regarding Appropriate Sunscreen Selection Based on SPF Variations and Skin Type Characteristics at Wirahusada Health Vocational School, Medan. JURNAL PENGMAS KESTRA (JPK), [S. l.], v. 6, n. 1, p. 235–240, 2026. DOI: 10.35451/7rzqxp44. Disponível em: https://ejournal.medistra.ac.id/index.php/JPK/article/view/3749. Acesso em: 6 jul. 2026.