Patterned hair loss also known as androgenetic alopecia (AGA), is a hereditary androgen dependent disorder characterised by a progressive process that causes a gradual conversion of terminal hair into miniaturized hair defined by various patterns [1]. It is a feature of men who have sufficient circulating androgens. Male pattern hair loss is characterised by its typical bitemporal recession of ...

Hair mechanical properties are primary indicators of hair integrity. Here we describe a methodology based on hair's resistance to wear evaluate cosmetic treatments. Using vibrational vortex cycle, developed protocol that relies the plastic deformation and degradation hair, due frictional forces between hardened steel balls fragments. We demonstrate when in contact with fragments promoted extend...

PURPOSE Current methods for measuring long-term endogenous production of cortisol can be challenging due to the need to take multiple urine, saliva or serum samples. Hair grows approximately 1 centimeter per month, and hair analysis accurately reflects exposure to drug abuse and environmental toxins. Here we describe a new assay for measurement of cortisol in hair, and determined a reference ra...

In mammals, auditory hair cells are generated only during embryonic development and loss or damage to hair cells is permanent. However, in non-mammalian vertebrate species, such as birds, neighboring glia-like supporting cells regenerate auditory hair cells by both mitotic and non-mitotic mechanisms. Based on work in intact cochlear tissue, it is thought that Notch signaling might restrict supp...

The objective of the present study was to understand the histomorphological and quantitative characteristics of black and gray human scalp hair. A total of 440 hair samples (220 black hairs and 220 gray hairs) were collected from 22 adult Bengalee males of West Bengal, aged between 3080 years. The hair samples were washed, scanned and measured by standard techniques. Medullary index was calcula...

Purpose Female pattern hair loss (FPHL) is a common hair disease. However, studies of the quantitative measurement of FPHL are still limited. The aim of this study was to investigate the characteristics of hair density and hair diameter in normal women and FPHL patients, and further correlate the quantitative measurement with the clinical presentation of FPHL. Patients and methods An evaluati...

There are many cell types in the hair follicle, including hair matrix cells which form the hair shaft and stem cells which can initiate the hair shaft during early anagen, the growth phase of the hair cycle, as well as pluripotent stem cells that play a role in hair follicle growth but have the potential to differentiate to non-follicle cells such as neurons. These properties of the hair follic...

In this paper we study the problem of hair interpolation: given two 3D hair models, we want to generate a sequence of intermediate hair models that transform from one input to another both smoothly and aesthetically pleasing. We propose an automatic method that efficiently calculates a many-to-many strand correspondence between two or more given hair models, taking into account the multi-scale ...