research Influence of Pigmentation on the Codeine Content of Hair Fibers in Guinea Pigs
Darker hair in guinea pigs holds more codeine than lighter hair.
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research Pharmacological BACE1 and BACE2 Inhibition Induces Hair Depigmentation by Inhibiting PMEL17 Processing in Mice
Blocking BACE1 and BACE2 enzymes causes hair color loss in mice.
research The Removal of Unwanted Hair Using a Ruby Laser
Ruby laser hair removal significantly reduces hair density.
research Effect of Honeysuckle Extract for Color Protection of Human Hair Exposed to Sunlight Radiation
Non-ionic silicone emulsion best protects hair color from sunlight.
research Review of Ayurvedic Herbs with Kesharanjana Property in the Management of Canities (Palitya)
Certain Ayurvedic herbs may help manage premature greying of hair.
research Clinical and Biological Impact of the Exposome on the Skin
Environmental factors, hormones, nutrition, and stress all significantly affect skin health and aging.
research About Photo-Damage of Human Hair
We don't fully understand how sunlight damages different types of hair.
research Premature Graying of Hair: Causes, Associations, and Treatments
Premature graying of hair may suggest health issues and currently lacks effective treatments.
research A Discourse on Human Hair Fibers and Reflections on the Conservation of Drug Molecules
Hair analysis for drugs needs a better understanding of how drugs enter hair, considering factors like hair structure and pigmentation.
research Hair Cosmetics
The article concludes that advancements in hair cosmetics require dermatologists to stay informed about products and their potential risks, including allergies and higher risks for hairdressers.
research Oral Zinc Sulphate Causes Murine Hair Hypopigmentation And Is A Potent Inhibitor Of Eumelanogenesis In Vivo
Oral zinc sulphate reduces dark hair color in mice.
research Hair Cosmetics: Dyes
Hair dyes can change hair color temporarily or permanently but may cause side effects like skin reactions and hair damage.
research HGF/SF Increases Number of Skin Melanocytes but Does Not Alter Quality or Quantity of Follicular Melanogenesis
HGF/SF increases skin melanocytes but doesn't change melanin type or amount.
research Exogenous Factors in Hair Disorders
Outside factors like grooming, chemicals, and the environment can damage hair and cause disorders.
research Structure and Function of the Skin
The skin has multiple layers and cells, serves as a protective barrier, helps regulate temperature, enables sensation, affects appearance, and is involved in vitamin D synthesis.
research Perspectives and Challenges of Hair Analysis
Hair is a complex organ, and understanding its detailed structure and growth phases is crucial for analyzing substances within it.
research Morphological Characteristics and Notes of the Skin in Preclinical Toxicity Assessment
Skin structure complexity and variability are crucial for assessing skin toxicity in safety tests.
research Spectroscopy as a Tool to Evaluate Hair Damage and Protection
Chamomile extract can protect hair from damage caused by light.
research Research Progress in Composition, Classification and Influencing Factors of Hair
Lipids are important for healthy hair, but their exact role is not fully understood and needs more research.
research Hair Cycle and Hair Pigmentation: Dynamic Interactions and Changes Associated with Aging
As people age, their hair follicles produce less pigment, leading to gray and white hair, due to factors like reduced enzyme activity and damage to melanocyte DNA.
research Tyrosinase Depletion Prevents the Maturation of Melanosomes in the Mouse Hair Follicle
Reducing Tyrosinase prevents mature color pigment cells from forming in mouse hair.
research Hair Follicle Pigmentation: Mechanisms and Factors Influencing Melanin Production
Hair color is determined by melanin produced and transferred in hair follicles.
research Decreased Benzothiazole-Type Pheomelanin in Regrown Brown Hair in Alopecia Areata
The girl's regrown brown hair had less of certain pigments than her original black hair.
research Human Skin Color: Origin, Variation, and Significance
Human skin and hair color variation is mainly due to melanin produced by a few genes, with melanin protecting against sun damage.
research Circulating Testosterone and Feather-Gene Expression of Receptors and Metabolic Enzymes in Relation to Melanin-Based Coloration in the Barn Owl
Barn owls with smaller black spots have higher testosterone levels, which might be due to genetic effects on hormone regulation rather than hormone effects on coloration.
research Piecing Together the Pigment-Type Switching Puzzle
The document concludes that MGRN1 affects mouse fur color by interfering with a receptor's signaling, but its full role in the body is still unknown.
research Sox2 in the Dermal Papilla Regulates Hair Follicle Pigmentation
Sox2 controls hair color by affecting pigment production in hair follicles.
research How Different Is Human Hair? A Critical Appraisal of Global Hair Fibre Characteristics and Properties Towards Defining a More Relevant Framework for Hair Type Classification
Human hair varies widely and should be classified by curl type rather than race.
research A Review of the Etiologies, Clinical Characteristics, and Treatment of Canities
Gray hair is caused by reduced melanin production or transfer issues, linked to aging and possibly health conditions, with treatments focusing on color camouflage.
research Melanogenesis-Promoting Effect of Cirsium Japonicum Flower Extract In Vitro and Ex Vivo
Cirsium japonicum flower extract increases melanin production and could help treat depigmentation conditions.