The Prophet ﷺ said: Wear your white garments, for they are among your best garments, and shroud your dead in them. Among the best types of collyrium you use is antimony (ithmid) for it clears the vision and makes the hair sprout.  

قَالَ رَسُولُ اللَّهِ ﷺ الْبَسُوا مِنْ ثِيَابِكُمُ الْبَيَاضَ فَإِنَّهَا خَيْرُ ثِيَابِكُمْ وَكَفِّنُوا فِيهَا مَوْتَاكُمْ وَإِنَّ خَيْرَ أَكْحَالِكُمُ الإِثْمِدُ يَجْلُو الْبَصَرَ وَيُنْبِتُ الشَّعْرَ