B4F is recommended by Menzerna as a first step in a three-stage polishing process on plastics and natural materials like horn, amber, etc. Bring your work surface to a high gloss, mirror finish by following up with Menzerna P195 Medium Cut and Menzerna G52 Super Finish. Additional polishing steps can add more clarity.
Menzerna technical data sheet here.
Precautions: Do not breathe dust during use. Wear appropriate safety clothing and respiratory protection. Generated dust exposure can irritate eyes and skin.