Ash-Shama'il Al-Muhammadiyah, Book 7, Hadith 49 (In-Book)

Ibn 'Abbaas Radiyallahu 'Anhu says: "Rasulullah Sallallahu 'Alayhi Wasallam said: 'Use kuhl made of ithmid on the eye; it brightens the eyesight, and strengthens and increases the growth of the eye lashes'. (Sayyidina Ibn'Abbaas Radiyallahu'Anhu also used to say) 'Rasulullah Sallallahu 'Alayhi Wasallarn had a small container for keeping kuhl, from which he applied kuhl in each eye three times every night"'

حَدَّثَنَا مُحَمَّدُ بْنُ حُمَيْدٍ الرَّازِيُّ، قَالَ‏:‏ حَدَّثَنَا أَبُو دَاوُدَ الطَّيَالِسِيُّ، عَنْ عَبَّادِ بْنِ مَنْصُورٍ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم، قَالَ‏:‏ اكْتَحِلُوا بِالإِثْمِدِ، فَإِنَّهُ يَجْلُو الْبَصَرَ، وَيُنْبِتُ الشَّعْرَ وَزَعَمَ أَنَّ النَّبِيَّ صلى الله عليه وسلم، كَانَتْ لَهُ مُكْحُلَةٌ يَكْتَحِلُ مِنْهَا كُلَّ لَيْلَةٍ، ثَلاثَةً فِي هَذِهِ، وَثَلاثَةً فِي هَذِهِ‏.‏

also referenced under: Book 7, Hadith 48 (English)