Rasamanjari 8.28

8.28

vajrīkṣīreṇa saptāhaṃ suśvetān bhāvayettilān /
tailena liptāḥ keśāḥ syuḥ śuklā vai nātra saṃśayaḥ //

For seven days, one should impregnate pure white sesame seeds with spurge milk; / hairs smeared with their oil will become white; there is no doubt about this.