Path Example (Windows): C:\Program Files\Adobe\Adobe Photoshop [Version]\Plug-ins Restart Photoshop.
Retains fine details such as individual hair tendrils, smoke, and fire.
Run the setup file. When asked for a destination, point it to your Photoshop Plug-ins folder.
Always scan downloads from unofficial sites with antivirus software to ensure the files haven't been tampered with. Installation Guide for Adobe Photoshop