Fingerprint powders are specially formulated fine powders used in forensic investigations to reveal hidden fingerprints. These powders adhere to the residue left by friction ridges on the skin, making latent prints—otherwise invisible to the naked eye—clearly visible for analysis. Various dusting techniques ensure precise application, helping forensic experts uncover crucial evidence with accuracy.

The performance of fingerprint powders in revealing latent prints depends on several key factors:

• Fineness – The powder must be fine enough to capture intricate fingerprint details. Finer powders can theoretically reveal greater detail than coarser ones.
• Adhesion – The powder should adhere primarily to fingerprint residue (such as oils) while avoiding unnecessary attachment to the surrounding surface, ensuring a clear and readable print.
• Sensitivity – Closely linked to adhesion, sensitivity refers to how well the powder clings to the fingerprint residue, enhancing visibility.
• Colour – The powder colour must contrast with the surface to ensure optimal visibility of the fingerprint.
• Flow – The powder must remain loose and free-flowing, preventing clumping or solidification for smooth application.