California Code, Government Code - GOV § 8880.52

(a) No tickets or shares in Lottery Games shall be sold to persons under the age of 18 years.  Any person who knowingly sells a ticket or share in a Lottery Game to a person under the age of 18 years is guilty of a misdemeanor.  Any person under the age of 18 years who buys a ticket or share in a Lottery is guilty of a misdemeanor.  In the case of lottery tickets or shares sold by Lottery Game Retailers or their employees, these persons shall establish safeguards to assure that the sales are not made to persons under the age of 18 years.  In the case of the dispensing of tickets or shares by vending machines or other devices, the Commission shall establish safeguards to help assure that the vending machines or devices are not operated by persons under the age of 18 years.

(b) All tickets or shares in Lottery Games shall include, and any devices which dispense tickets or shares in Lottery Games shall have posted in a conspicuous place thereupon, a notice which declares that state law prohibits the selling of a lottery ticket or share to, and the payment of any prize to, a person under the age of 18 years.