Video of Pelosi went viral after surveillance cameras inside the salon captured her without a mask.
California guidelines on salons vary by county, but San Francisco officials had not permitted indoor salons to open.
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Salon owner Erica Kious shared the video.
Kious told Fox News Channel that she's even afraid to return to San Francisco after being attacked online for exposing Pelosi's visit.
Footage previously aired by Fox showed Pelosi, her mask around her neck rather than on her face, walking through the establishment. A stylist followed her, wearing a mask.
Kious said she rented chairs to stylists, one of whom let her know in advance that Pelosi wanted a wash and a blow dry. The owner said she considered the service "a slap in the face" to business owners who have been forced to close.
The Associated Press contributed to this report.
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