NANJING, June 12 (Xinhua) -- Police in east China's Jiangsu Province arrested 34 people suspected of manufacturing and selling fake beauty injections.

The suspects were arrested in two operations, and fake products and materials worth over 38 million yuan (6 million U.S. dollars) were seized, Zhenjiang police said Tuesday.

The products include 2,800 fake botox injections, as well as 11,500 fake injections of hyaluronic acid, lipodissolve, and other substances.

Botox is a type of nerve blocker often commercially advertised to reduce wrinkles and slim the face, but laws state it can only be used in qualified beauty parlors, police said.

"Fake cosmetic injections may cause serious adverse reactions and pose threats to people's health," said Wang Fan, a local police officer. A fake botox injection, costing less than 50 yuan to manufacture, can be sold for up to 1,000 yuan on the black market, Wang added.

Further investigation is under way.