Medical News Today. https://www.medicalnewstoday.com/articles/320288
Diakses 16 September 2020Blushin. https://blushin.com/how-to-use-black-tea-for-grey-hair/
Diakses 16 September 2020Be Beautiful. https://www.bebeautiful.in/all-things-hair/everyday/8-home-remedies-to-darken-grey-hair
Diakses 16 September 2020