Development of Nail Henna (Lawsonia Inermis Linn.) Leaf Powder as a Latent Fingerprint Visualization on Non-Porous and Porous Surfaces

The current study aimed to present a simple, non-toxic, inexpensive, and easy-to-use fingerprint powder extracted from nail henna leaf to identify latent fingerprints on porous and non-porous surfaces. The powder dusting technique was applied in the current study by using nail henna leaves with a particle size of ۶۰ to ۲۰۰ mesh. Moreover, the current study used ۱۰۱ fingerprint samples derived on ethnicity, gender, and blood type to determine fingerprint patterns. The results of the development of nail henna powder from sizes ۱۰۰ and ۲۰۰ mesh revealed the clear visualization of fingerprint patterns with prominent brown contrast on non-porous surfaces. Besides, the loop fingerprint patterns reflected the highest percentage based on ethnicity, gender, and blood group.

Keywords:

Nail Henna Leaves , Latent fingerprints , Lawsone , Non-Toxic Fingerprint Powders , Powder dusting