Lansberry's Ridge Builder is applied to the finger bulbs before fingerprinting - making it possible to obtain legible fingerprints from brick masons, agricultural workers, the elderly, or anyone else who has poor fingerprint ridge structure. This product will help increase the number of successful latent print searches and subsequent comparisons by ensuring better initial fingerprint recordings. Available in two forms: liquid and disposable pads. Apply liquid with a cotton swab or wipe disposable pad on finger before fingerprinting.