A Smith County grand jury indicted a Tyler woman on March 29 of two counts of practicing medicine without a license.
Ms. Foster owns the Queen Divas salon on Martin Luther King Boulevard in Tyler.
Tyler police spokesman Don Martin said on Monday that he had no further information on the woman's condition.
Ms. Foster, who has a hearing in the Smith County 7th District Court on June 25, has been in the Smith County Jail since Feb. 28 on a $200,000 bond.
An arrest affidavit prepared by Tyler Police Detective Andy Erbaugh stated that the woman who had to be hospitalized experienced pain in her chest and shortness of breath as soon as she was injected with the substance.
Ms. Foster told the women she was working under the direction of a doctor in Houston and was using a saline solution gel in the procedures, according to the affidavit.
The second victim has told police she developed a rash around the injection site and is now under a physician's care. Both women said the procedure was done in a back room on a couch full of laundry, the affidavit stated.
According to a list of items seized from Queen Divas on a search warrant, volumes of needles and syringes of various sizes, packages of Krazy Glue, rubber gaskets, latex gloves, cyclobenzaprine (a muscle relaxer), pseudoephedrine (sinus medication) methylprednisolone (a corticosteroid drug), surgical tape, a bloody cotton ball, a jar with unknown substance and an open tube of Gasket Maker Super Clear silicone were taken from the salon.
Staff Writer Kenneth Dean contributed to this story.