title: Luminous lip-prints as criminal evidence.
abstract: Luminescence is specially a useful property for the search of invisible evidences at the scene of a crime. In the latent fingerprints particular case, there are at one's disposal fluorescent reagents for their localization. The study of latent lip prints (that is lip prints from protective lipstick, or permanent or long-lasting lipstick that do not leave any visible marks) is more recent than fingerprints study. Because of the different composition of both types of prints, different reagents have been tried out on their developing. Although, lysochromes are particularly useful reagents to obtain latent lip prints, it may occur on coloured or multicoloured surfaces, the developing is not perceived due to contrast problems between the reagent and the surface where the print is searched. Again, luminescence offers the possibility to solve this problem. Nile Red is being studied as a potential developer for latent lip prints. The results on very old prints (over 1year) indicate that this reagent is highly efficient to get latent lip prints.
authors.affiliation: Department of Legal Medicine, College of Medicine and Odontology, University of Valencia E.G., 46010 Valencia, Spain.
authors.forename: Ana
authors.initials: A
authors.lastname: Castelló
authors.forename: Mercedes
authors.initials: M
authors.lastname: Alvarez-Seguí
authors.forename: Fernando
authors.initials: F
authors.lastname: Verdú
mesh_terms: D005554:Forensic Medicine / Q000379:methods*; D006801:Humans; D007202:Indicators and Reagents; D008046:Lip; D049449:Luminescence; D010078:Oxazines; D014466:Ultraviolet Rays
chemical_list: D007202:Indicators and Reagents; D010078:Oxazines; C044808:nile red