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Diakses pada 25 Maret 2020Healthline. https://www.healthline.com/health/beauty-skin-care/how-to-get-rid-of-blackheads
Diakses pada 25 Maret 2020WebMD. https://www.webmd.com/vitamins/ai/ingredientmono-269/activated-charcoal
Diakses pada 25 Maret 2020Medicine Net. https://www.medicinenet.com/blackheads/article.htm
Diakses pada 25 Maret 2020