SHASTA COUNTY, Calif. - Authorities say that Susan Tancreto pleaded not guilty to eight felony charges on Thursday.
She is suspected of illegally injecting patients with Botox without a license in Redding.
Tancreto faces charges including the unlicensed practice of medicine and selling a controlled substance. Some of the victims experienced significant facial deformities,
In the wrong hands, one expert says these products can cause a number of health problems.
"Somebody who's not properly trained can put it into a blood vessel first of all," said Julie Kaplan, a certified aesthetic nurse specialist. "And if the product goes into a blood vessel it could lead to the back of the eye and cause blindness. If it goes into a blood vessel it can also block oxygen to the skin and cause the skin to die."
The Shasta County District Attorney's Office wants to hear from any patients that received treatments from Tancreto. The office can be reached at (530) 245-6300.