Shea Moisture Jamaican Black Oil Strengthen, Grow & Restore Treatment Masque. This deeply nourishing mask restores strength and resilience to damaged, brittle, or chemically treated hair. Perfect for those who regularly color, straighten, perm, or style their hair. Also perfect for frizzy, curly, or wavy hair in a natural style. Promotes hair growth by supporting elasticity. Reduces hair breakage and fragmentation. Peppermint oil stimulates the scalp for an invigorating experience. Leaves hair soft, manageable, and shiny.