An agency of the World Health Organization calls tanning beds carcinogenic.
The link between ultraviolet rays and deadly skin cancer is part of why Samantha Guild of Aim at Melanoma supported the bill. She says in terms of sheer numbers, California's new melanoma cases are the highest in the nation.
GUILD: "Our hope is that by preventing teenagers from using tanning beds, we will see those numbers drop dramatically."
The new law updates the code that says 14-17 year olds from tanning indoors with parental consent.
Salon owner Craig Joyner opposes changing a law that he says has been working just fine.
He speaks for the state's indoor tanning trade organization.
JOYNER: "It's an unnecessary intrusion of the government into parental choices and into people's lives."
Joyner says the ban on minors in tanning salons won't have much of a financial impact on his business.
He estimates minors make up about 5% of the clientele in other California tanning salons.