Olive oil is considered a sunnah oil for hair, as it's believed the Prophet Muhammad (SAW) used it.
While other oils might offer benefits, olive oil stands out due to historical accounts linking its use to the Prophet (SAW). This connection elevates it to a position of religious significance for some Muslims seeking to follow the sunnah in their daily practices. The term "sunnah" refers to the practices, customs, and traditions of the Prophet Muhammad (peace be upon him), which serve as a guide for Muslims.
Therefore, if you're looking for an oil with a sunnah connection for hair care, olive oil is the most commonly referenced and practiced choice.