The Kukui nut itself is perhaps the most prized part of the tree. Ancient Hawaiians used the oil derived from the nuts to coat fishing nets, while the outer shells were used in the process of creating natural dyes for tattoos. The oil could also be used as a dressing for treating sore muscles, burns, or other skin complaints. The oil is often an ingredient in soaps, candles, lotions, and even as an oil for surfboards!
Known elsewhere as the Candlenut tree, ancient Hawaiians would burn Kukui nuts in order to use them like candles. Nuts were strung along the middle section of a coconut palm frond, then lit and burnt one at a time. Because each nut burns for approximately 15 minutes, ancient Hawaiians were able to use them to measure time.
The nuts can also be roasted and the inside of the nut turned into a spice called inamona. This spice is still used in traditional poke recipes. Depending on how the inside of the nut is consumed it can also be used as a laxative(!).