On Saturday, during a Facebook live video, Baio played an audio recording of an interview Eggert did when she said she lost her virginity to the actor "years" after the show "Charles in Charge" ended.
Baio's wife, Renee Baio, responded by tweeting Eggert that her husband's legal team had served Eggert with two cease-and-desist letters.
Baywatch actress Nicole Eggert has accused Scott Baio of touching her when she was a school girl. He then produced two letters, dated from previous year, to Eggert and Charles in Charge costar Alexander Polinsky, who Baio claims "decided to team up against" him, telling them both to go to the police if they had legitimate claims.
It was then, she alleged her inappropriate relationship with Baio began.
The reason I'm doing Facebook Live is because nobody can edit me, nobody can change what I said.
"I'm about to do a Facebook live", Baio himself chimed in from @ScottBaio, "to prove her claims are 100% lies!"
She wrote: " I was 14, 15, 16 and 17.
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If it doesn't happen, then we are strong enough to focus on the players we have and focus on the job with the players we have. He hit an Arsenal player at the near-post, and Wenger's side advanced to the Wembley final against Manchester City next month.
In response to Eggert's tweets, which have received positive and negative comments, actor Adam Carl tweeted, "When I worked on Charles in Charge in '88, I sat with you while you cried about that abusive asshole".
'Any normal heterosexual, red-blooded American guy, the outcome would have been the same, ' he said. "It was years later", Eggert can be heard saying.
"I kept my mouth shut, because usually when false claims in the past have been made about me they just go away", Baio said.
The actor claimed that Eggert's first accusations against him arose in 2012 and 2013 when she was promoting realities shows, insinuating that she was after more publicity.
'If you have a claim, go to the police.
The pair starred together on Charles in Charge, which ran from 1984 to 1990, on which Baio played the title character and Nicole played Jamie, one of the children college student Charles became a caretaker for when he moved into a house off-campus.
"When you have minors on the set, when they are not on the set working, they are in the classroom with the teacher, the teacher brings them to the set, and on the set is their parents, their teachers." he said. "And what I'm telling you is the truth".