research Permeant lipophilicity and vehicle composition influence accumulation of dyes in hair follicles of human skin
Lipophilic dyes accumulate more in hair follicles when delivered with surfactant-propylene glycol solutions.
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840-870 / 1000+ results research Some histological and biochemical evaluation on commercial hair dyes
Commercial hair dyes can harm the skin and liver.
research Evaluation of Skin Penetration of Fluorescent Dissolved Formulations Using Confocal Laser Scanning Microscopy
Moderately lipophilic dyes penetrate skin deeply, while highly hydrophobic or lipophilic dyes stay on the surface.
research In vitro and in vivo study of dye diffusion into the human skin and hair follicles
Dyes can penetrate human skin and hair follicles up to 1.2 mm deep and the sebaceous gland can store dye; Indocyanine Green lotion was made for safe dyeing and monitoring.
research Enzymatic synthesis of biosafe hematoxylin dyes on hair: enhanced post-dyeing hair health and boosting color fastness
This eco-friendly hair dye method improves hair health and color durability.
research A green light emitting turn-on ionic liquid-based nano-optode for selective and sensitive detection of dextran sulphate
A new fluorescent material can detect dextran sulfate sodium, turning green when present, useful for forensic and environmental monitoring.
research Fiber-Safe Extraction of Red Mordant Dyes from Hair Fibers
Researchers developed a less damaging way to extract red dyes from wool using EDTA and DMF, preserving the fiber's strength for further analysis.
research Fiber-Safe Extraction of Red Mordant Dyes from Hair Fibers
A new method extracts red dyes from wool without damaging it, although it slightly weakens the wool.
research Metabolite screening of aromatic amine hair dyes usingin vitrohepatic models
The tested hair dye ingredients do not form harmful oxidized metabolites in the liver.
research Dyeing Human Hair
research Percutaneous penetration of hair dyes
Hair dyes penetrate the scalp very minimally, less than 1%.
research The science of color: How chemical dyeing processes transform hair structure
Oxidative dyes damage hair more than semi-permanent dyes, but new technologies help protect hair while coloring.
research Research on the Mechanism of Hair Dyeing Agents and Strategies for Health Risks Reduction
Hair dyes can be harmful, but risks vary by person and can be reduced.
research The science of color: How chemical dyeing processes transform hair structure
Oxidative dyes damage hair more than semi-permanent dyes, but new technologies help protect hair while coloring.
research Nanoparticles in hair dyes
Nanoparticles could make hair dyes safer by reducing harmful effects.
research On Pathways for Small Molecules Into and Out of Human Hair Fibers
Dye enters hair at the edges of cuticle cells and penetrates more from water than alcohol-based solutions.
research Analysis of keratin films as screening tools for predicting the efficacy of potential hair dyes
Translucent keratin films are better for testing hair dyes.
research NTP Toxicology and Carcinogenesis Studies of C.I. Acid Orange 3 (CAS No. 6373-74-6) in F344/N Rats and B6C3F1 Mice (Gavage Studies).
C.I. Acid Orange 3 caused cancer in female rats but not in male rats or mice.
research Effect of surfactant type on the dyeability and color resistance of semi-permanent basic hair dye
Cationic and nonionic surfactants provide better color intensity and resistance for semi-permanent hair dye than anionic surfactants.
research 55 cases of allergic reactions to hair dye: a descriptive, consumer complaint‐based study
Many people had severe allergic reactions to a common hair dye ingredient, causing them to seek medical care and miss work.
research THE CHEMISTRY MECHANISM OF HAIR DYES
Permanent hair dyes use chemicals that react with hydrogen peroxide to create color.
research Ingredients Present In Personal Care Products That Need Scrutiny
Certain ingredients in personal care products, like formaldehyde, oxidative hair dyes, and sulfates, pose health risks and need careful review.
research Hair colouring systems delivering colour with reduced fibre damage
Using chelants in hair dye reduces fiber damage by preventing harmful radicals.
research A REVIEW ON COLOURFUL MEHENDI: THE RISK OF PARAPHENYLENEDIAMINE
PPD in mehendi can cause serious health problems and needs regulation.
research Dyeing behaviours of amino heterocyclic compounds as blue oxidative hair dye precursors applied to keratin fibres
1,2,3,4-tetrahydroquinoline compounds are great for stable, pure blue hair dye.
research Investigation of hair dye deposition, hair color loss, and hair damage during multiple oxidative dyeing and shampooing cycles.
Repeated dyeing and shampooing cause hair color loss and damage.
research <title>In-vitro and in-vivo study of dye diffusion into the human skin and hair follicles</title>
Dyeing hair can help target and destroy hair follicles selectively.
research Metal-Chelation-Assisted Deposition of Polydopamine on Human Hair: A Ready-to-Use Eumelanin-Based Hair Dyeing Methodology
Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.
research Multicolor Hair Dyeing with Biocompatible Dark Polyphenol Complex-Integrated Shampoo with Reactive Oxygen Species Scavenging Activity
The new hair-dyeing shampoo is safe, colors hair evenly, and strengthens it.
research Sensitization and Clinically Relevant Allergy to Hair Dyes and Clothes from Black Henna Tattoos: Do People Know the Risk? An Uncommon Serious Case and a Review of the Literature
Black henna tattoos can cause severe allergies to hair and textile dyes, and there's a need for greater public awareness and regulation.