oil!
yes i did, but not my grandma.whenever i used to go to her home during my vacation, she used to scold me for not oiling my hair and when i take the relevantly used blue oil bottles, she used to advise me not to use them and buy me cold-pressed oil bottle before i return home. why cold pressed oils?...
https://www.standardcoldpressedoil.com/hub/rise-of-cold-pressed-oils-in-tamilnadu/