Haw. Rev. Stat. § 712-1252: Knowledge of character, nature, or quantity of substance, or age of transferee; prima facie evidence.

(1) The fact that a person engaged in the conduct specified by any section in this part is prima facie evidence that the person engaged in that conduct with knowledge of the character, nature, and quantity of the dangerous drug, harmful drug, detrimental drug, or intoxicating compounds possessed, distributed, or sold.

(2) The fact that the defendant distributed or sold a dangerous drug, harmful drug, detrimental drug, or intoxicating compound to a minor is prima facie evidence that the defendant knew the transferee to be a minor.