Forensic Trichology

Explore how hair, an appendage of skin and mini organ in mammals, regulates body temperature and aids perspiration, while serving as virtually indestructible forensic evidence for identification in investigations.

Explore the basic anatomy of hair, including epidermis, dermis, hair follicle and shaft with medulla, cortex, cuticle, inner and outer root sheaths, and pigment granules in humans and animals.

Explore the hair growth cycle, detailing the growth phase, transitional phase, and resting phase, including durations and how a new cycle starts after shedding.

Examine the composition of hair, highlighting protein fibers (~75%), water (~50%), and lipids (~1–2%). Identify two protein types—type one acidic and type two basic—to relate to hair structure.

Master the medicolegal use of hair analysis: differentiate hair from fiber, identify human vs animal hair, determine race, gender, and age, and assess removal, injury, DNA, and time since death.

Preserve forensic evidence by preventing contamination, photograph the scene from different angles and sketch the layout, then collect hair samples using clipping or forceps and seal them securely.

Learn how to maintain chain of custody for forensic evidence by preserving, labeling, sealing, and documenting each item from collection to court, ensuring integrity and admissibility.