If you're watching for the "authenticity," keep these scientific points in mind:

This is the most common technique used in videos to guide a viewer toward a specific mental state or behavioral change

If you are asking whether these videos "work" in a psychological or clinical sense, the answer depends on how you define "work": As Entertainment:

Spirals, flashing lights, or "pulsing" overlays are added in post-production to create an aesthetic of mind control.

Do YouTube hypnosis videos work? A hypnotherapist explains. - 1stDrive

While viral videos might be entertaining, if you are looking for genuine relaxation or wellness, stick to established professionals or well-reviewed channels. The Bottom Line

While "girls gone hypnotized" full videos offer a popular narrative fantasy of total control and unlocked inhibitions, the mechanics behind them are rooted in performance art and creative scripting rather than literal mind control. Real hypnosis is a collaborative psychological tool that requires consent, focus, and a willing participant—elements that can produce fascinating psychological states in clinical or stage settings, but differ wildly from the dramatizations seen in adult media. Share public link

While the idea of a "full video" of a girl being hypnotized is entertaining for many, do not rely on these videos for therapeutic purposes. They are often exaggerated, and the effectiveness is largely determined by the viewer’s own willingness to participate.