Any person 18 years of age or over who violates Section 109575 by knowingly distributing an imitation controlled substance to a person under 18 years of age is guilty of a misdemeanor and shall, if convicted, be punished by imprisonment for not more than one year in a county jail or a fine of not more than two thousand dollars ($2,000), or by both that imprisonment and fine. Upon a second or subsequent conviction of this offense, the person shall be subject to imprisonment for not more than one year in a county jail and a fine of not less than six thousand

dollars ($6,000).