Hair Removal Reagents
Hair Removal Reagents - Related Videos
01:22
Hair Cells
0 Views •
2019
Hair cells are the sensory receptors of the auditory system—they transduce mechanical sound waves into electrical energy that the nervous system can understand. Hair cells are located in the organ of Corti within the cochlea of the inner ear, between the basilar and tectorial membranes. The actual sensory receptors are called inner hair cells. The outer hair cells serve other functions, such as sound amplification in the cochlea, and are not discussed in detail here. Hair cells are named after...
10:17
Preparing Anhydrous Reagents and Equipment
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2023
Source: Laboratory of Dr. Dana Lashley - College of William and Mary Demonstrated by: Timothy Beck and Lucas Arney Many reactions in organic chemistry are moisture-sensitive and must be carried out under careful exclusion of water. In these cases the reagents have a high affinity to react with water from the atmosphere and if left exposed the desired reaction will not take place or give poor yields, because the reactants are chemically altered. In order to prevent undesired reactions with H2O...
08:54
Validated LC-MS/MS Panel for Quantifying 11 Drug-Resistant TB Medications in Small Hair Samples
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Cited by 5 •
2020
Current methods of analyzing patients’ adherence to complex drug resistant-tuberculosis (DR-TB) regimens can be inaccurate and resource-intensive. Our method analyzes hair, an easily collected and stored matrix, for concentrations of 11 DR-TB medications. Using LC-MS/MS, we can determine sub-nanogram drug levels that can be utilized to better understand drug adherence.
09:45
A Protocol for Safe Lithiation Reactions Using Organolithium Reagents
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Cited by 5 •
2016
The safe and proper use of organolithium reagents is described.
01:16
Accessory Structures of the Skin: Hair and Hair Follicles
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2025
Hair and hair follicles are integral components of the integumentary system. Hair is a filamentous structure composed mainly of a protein called keratin. It is found on the surface of the skin throughout the body, except for areas such as the palms of the hands and soles of the feet. Hair is a keratinous filament growing out of the epidermis. It is primarily made of dead, keratinized cells. Hair strands originate at the epidermal penetration called the hair follicle. The hair shaft is the part...
FAQs
Reducing agents such as thioglycolates and sulfides disrupt the disulfide bonds that stabilize keratin in the hair shaft. Breaking these bonds reduces the shaft’s structural strength, allowing the hair to soften enough for removal from the skin surface. This chemical action explains why the formulation can affect hair without requiring mechanical cutting or pulling.
Alkaline conditions support the chemical action of reducing agents on keratin. Their effectiveness also depends on concentration and exposure time, so changing either factor can alter how completely the hair softens. These variables must remain controlled because stronger or longer exposure may increase the possibility of skin irritation or tissue damage.
Cutting removes the visible portion mechanically but does not chemically weaken the keratin structure of the shaft. Hair removal reagents instead act on the bonds that stabilize keratin, producing a softened shaft that can be removed from the skin surface. This distinction makes the chemical approach useful when researchers need a hair-free surface for observation or handling.
Concentration and exposure time are the key controllable factors identified for these reagents. Sufficient chemical action is needed to weaken the hair, but excessive concentration or prolonged contact can increase irritation and tissue damage. In biological work, controlling these conditions helps produce a usable hair-free area while preserving the surrounding skin or experimental tissue.
In biology, these reagents prepare skin when hair would obstruct imaging, interfere with topical treatment studies, complicate wound investigations, or hinder sample handling. Removing the hair can improve access to the skin surface and make visual observation or experimental manipulation easier. Their value therefore comes from reducing a physical obstruction during controlled biological procedures.
When the formulation acts effectively, the hair shaft becomes sufficiently softened for removal from the skin surface. The resulting hair-free area may support clearer imaging, more direct topical treatment, or easier handling of a sample. However, the outcome depends on concentration and exposure time, and poorly controlled conditions may produce irritation or tissue damage.