While I don’t think the writers of the musical Hair were thinking of olive oil when they wrote those lines, they were right on! Since ancient times, olive oil has been extensively used in hair therapy. Olive oil does two things to the hair. First, it increases the strength of the hair. Second, it improves the hair shaft’s overall flexibility. Check out my article, Hair Care Tips with Olive Oil in Pressing Times, Olive Oil Source Newsletter and the well-researched 28 Day Study of Olive Oil for Hair Growth | A Scientific Review.