research Quantifying the effects of repeated dyeing: morphological, mechanical, and chemical changes in human hair fibers
Repeated hair dyeing significantly damages hair.
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60-90 / 1000+ results research Influence of anionic surfactants on coacervation with cationic guar gum for hair care applications
A balanced mix of cationic guar gum and anionic surfactants improves hair conditioning and protection.
research Evaluation of Hair Fiber and Sensory Properties following the Application of Conditioners containing Jojoba and Coconut Oils
Conditioners with jojoba and coconut oils improve hair feel and reduce damage perception.
research In vitro evaluation of changes of hair fibers subjected to oxidation-reductive straighteners associated with dyeing
Straightening and dyeing damage hair structure.
research Exploring the effects of wetting and free fatty acid deposition on an atomistic hair fiber surface model incorporating Keratin Associated Protein 5-1
Water and fatty acids affect hair's surface differently based on hair damage, and models can help understand hair-cosmetic interactions.
research Human pollution exposure correlates with accelerated ultrastructural degradation of hair fibers
Pollution exposure speeds up hair damage.
research Experimental Investigations on Hair Fibers as Diffusion Bridges and Opiates as Solutes in Solution
Hair can absorb and transfer opiates when soaked in water, with damaged hair absorbing more.
research Dilated human hair fiber after exposure to flames for 'split ends' cutting.
The Brazilian candle flame technique can damage hair by melting the cuticle and exposing the cortex.
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 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 Analysis of Cysteine on the Surface of Hair Fibers with Spectrofluorescence
Cysteine formation on hair indicates damage, best detected at pH 4.5.
research Mechanical properties characterization of human hair fibers cortex region by multiparametric Atomic Force Microscopy mapping
The active ingredient improves the strength of damaged hair fibers.
research Enzyme Treatment of Wool and Specialty Hair Fibers
Enzymes xylanase and pectinase clean wool and specialty hair fibers effectively without damage, offering an eco-friendly alternative to soap and hot water.
research Thermal Induced Changes in Cuticle and Cortex to Chemically Treated Hair
Heat worsens damage in chemically treated hair, especially bleached and straightened hair.
research Changes in intraepidermal nerve fiber and Langerhans cell densities in the plantar skin of rats after mercuric chloride exposure
Mercury exposure damages small nerve fibers in rats' skin.
research Non-denatured Soybean Extracts in Skin Care: Multiple Anti-Aging Effects
Non-denatured soybean extracts provide multiple anti-aging skin benefits.
research Photodegradation of human hair: a microscopy study
UV radiation significantly damages hair, especially with humidity, making it more vulnerable to further damage.
research Water-Soluble Polymers in Hair Care
Alkaline hair relaxers damage hair, but cationic and non-ionic polymers can help reduce this damage.
research Alopecia: histologic changes.
The review found that specific changes in scalp tissue can help diagnose different types of hair loss.
research Effects of high-power millimeter wave on mice skin at different time points of radiation
Longer exposure to high-power millimeter wave radiation causes more severe skin damage in mice.
research Scanning Electron Microscope Evaluation of Hair Dye Effects on the Cuticle Cells of Canine Hair
Hair dye can damage dog hair and cause health issues.
research The Gut-Brain-Skin Axis and Role of Intestinal Dysbiosis in Acne Vulgaris: Therapeutic Effects of Pro- and Prebiotic Use
Probiotics and dietary changes can help treat acne.
research Photodegradation of hair of different ethnicity after 1 year of exposure to natural weathering in Arizona
Hair with more melanin resists weather damage better.
research The chlorine-hair interaction. III. Effect of combining chlorination with cosmetic treatments on hair properties
Cosmetic treatments after chlorination damage hair more than treatments before.
research Chemical modification of keratin fibers using 2‐iminothiorane hydrochloride
2-iminothiorane hydrochloride improves hair waving permanence without damage.
research Age-Related Variations in the Population of Active Secondary Hair Follicles, Oxidative Stress and Antioxidant Parameters in Cashmere Goats
Younger cashmere goats produce more and better-quality fiber due to higher active hair follicles and antioxidant capacity.
research A Raman spectroscopic investigation of the mechanism of the reduction in hair with thioglycerol and the accompanying disulphide conformational changes
Thioglycerol treatment at pH 9.0 with ammonia causes less hair damage and better waving than thioglycolic acid.
research Nanomechanical characterization of human hair using nanoindentation and SEM
Human hair's strength and flexibility vary by ethnicity, damage, and treatment.
research Chemical and photo-oxidative hair damage studied by dye diffusion and electrophoresis.
Chemical treatments and light exposure damage hair proteins.
research Stability of opiates in hair fibers after exposure to cosmetic treatment
Cosmetic treatments like bleaching and perming can greatly reduce opiate levels in hair, possibly leading to false-negative drug tests.