I have been reading from a sefer called Hadras Ponim-Zokon (link online-https://koshershaver.info/)
stating that it is completely asur gamur to shave, possibly even with scissors.
The Targum Yonason, who was a tanna, forbids even scissors, because of Lo Silbash

I myself am still a bachur and never shaved M'Safek, but I read in Orchos Yosher, which R' Chaim ruled in his perek on shaving, that scissors is asur.
And he brings a story from the Gemora that two tannaim were davening maariv, and one stood up for Shma, to show that the Halacha follows Beis Hillel.
The other Tanna said to him- You are like one who has a full beard, and people ask- why don't you cut your beard? and he says because some people use a razor, and are oiver on a D'Oiraisa.
But shouldn't this prove that scissors are mutar, because he said that some use a razor and are oiver, but other than a razor is mutar?