Articles tagged with Hair
Research involving over 5000 people found hair dye and smoking increase risk of primary biliary cirrhosis, a progressive autoimmune liver disease. Smoking was also more common among those with PBC compared to the general population.
Home-use IPL systems emit lower fluence rates and have physical safety features to minimize optical hazard. NPL's research confirms their safety, building on earlier work on dosimetry needs for salon-based devices.
University of Florida engineers develop a nearly perfect hydrophobic interface by reproducing spider hairs on flat plastic surfaces. The surface repels hot and cold water, pick up dirt, and has potential applications in food packaging, windows, solar cells, and boat hulls.
Researchers at the University of Copenhagen have successfully reconstructed an ancient human genome from a 4,000-year-old hair sample found in Greenland. The team's findings provide valuable insights into the genetic makeup and traits of the Inuk people, who were among the first to settle the New World Arctic.
Researchers tested urban macaques for lead and toxic metal exposure, finding higher levels in younger animals. The study suggests that synanthropic macaques, which share the same ecological niche with humans, could serve as early indicators of human exposure to toxins.
A 29-year-old man experienced symptoms after a tarantula released 'a mist of hairs' into the air, which got stuck in his eyes. He was treated with topical steroids and made a full recovery. The case highlights the importance of proper eye protection when handling tarantulas.
Researchers from the University of Western Ontario detected cortisol in ancient Peruvian hair samples to understand how our ancestors responded to life-changing experiences like illness and disease. The study found high stress levels right before death, but also multiple episodes of stress throughout their final years of life.
A new UCF study found nearly half of 3- to 6-year-old girls worry about being fat, while one-third change physical attributes. Watching Disney movies like 'The Princess and the Frog' can help parents start conversations about weight, skin color, and beauty.
Researchers found that tanned very-light-skinned children with no red hair develop more nevi than untanned counterparts. The study suggests tanning avoidance may reduce melanoma risk in this population.
Researchers have created a new technology using DNA origami that can form tiny letters with multiple branching points, addressing the need for narrow features in nanoelectronics. The breakthrough could lead to the development of nanoscale devices with unprecedented capabilities.
A study published in the Journal of Applied Gerontology found that hairstylists have close relationships with their elderly clients and can identify signs of depression, dementia, and self-neglect. The stylists surveyed reported being willing to refer older adults to community services, but were unfamiliar with many available options.
Researchers from the University of Utah and NIH identified three genes controlling seven major types of dog coat, including curly hair. The study used data from Portuguese water dogs to understand complex human diseases caused by multiple genes.
A study identifies three genetic variants accounting for the wide range of dog coat textures, from poodles to beagles. The findings have implications for understanding complex human diseases, such as cancer and heart disease.
Scientists at the University of Leeds are developing safer hair dyes and cosmetics using compounds extracted from Shetland seaweed, which can replace synthetic ingredients found in current products. The project aims to create a new range of colours including blonde, brown, red, and black.
Researchers at Uppsala University analyzed DNA from shed hairs in a book owned by Nicolaus Copernicus, finding two hairs with matching profiles to the putative remains. The results were confirmed by analysis of tooth and bone tissue from the same location.
Researchers found that patients with trichotillomania reported significantly reduced hair-pulling after taking the supplement for 12 weeks. Fifty people participated in a double-blind study, with 56% reporting improved symptoms.
A 12-week study found that N-acetylcysteine significantly reduced hair-pulling symptoms in patients with trichotillomania, a condition characterized by compulsive hair-pulling and significant psychosocial problems. The treatment was well-tolerated and compared favorably to existing treatment options.
A new study from Stanford University School of Medicine finds that hair sheep blood is a perfect substitute for horse or sheep blood in microbiology tests, reducing costs and improving diagnosis in the developing world. The researchers also discovered that collecting blood in donation bags eliminates the need for defibrination, making ...
A new method uses laser ablation and multicollector ICP-MS to detect small variations in sulphur isotopes in hair, which can be linked to a person's geographical movements. The technique has been tested on volunteers with different diets and origins, showing promise for tracking international criminals.
A team of scientists has identified the molecular structure of hemocyanin, a protein complex involved in skin and hair coloring. The study reveals how hemocyanin is activated, leading to an understanding of both albinism and melanoma.
Engineered sensors mimic the hair structures of blind cavefish, detecting underwater objects and navigation. The researchers found that adding a gel-like capsule improved sensitivity and detection range.
Researchers have created a new 'green' hair treatment that uses an enzyme to naturally lighten hair without damaging it. The enzyme degrades melanin and combats free radicals produced by traditional hydrogen peroxide-based bleaches, making it a potential solution for reducing hair damage and environmental impact.
A study published in Archives of Dermatology found that wet combing is more accurate than visual inspection for identifying active head lice infestations. The method correctly identified 90.5% of cases, while visual inspection only detected 28.6%. This finding has implications for the diagnosis and management of pediculosis capitis.
UCSF researchers found that hair samples can accurately predict treatment success in HIV patients by analyzing antiretroviral drug levels. This method may become a new standard in HIV clinical care, allowing for the monitoring of pill-taking and treatment response.
Researchers found that consumers' quality expectations were initially misled by biasing cues, but they learned from these mistakes and made more accurate judgments in subsequent purchases. The study suggests marketers should rethink their strategies for misleading consumers with false attributes, as it may backfire on repeat purchases.
P&G Beauty & Grooming scientists showcase latest findings on hair, skin, color, and shaving efficacy using advanced science and technology. The studies explore the role of genetics in skin aging, optimize color foundation formulations, and develop new blade technologies for improved shaving comfort.
Gladstone scientists discovered that the DGAT1 enzyme plays a crucial role in regulating retinoic acid levels in the skin. Mice lacking this enzyme experienced increased retinoic acid levels, leading to skin sensitivity and hair loss, which could be prevented by restricting retinol intake.
A new article suggests that gorilla lice evolved to infest pubic hair around 3.3 million years ago, possibly due to human-gorilla contact. This divergence occurred despite humans and gorillas diverging from a common ancestor at least 7 million years ago.
A team of scientists has successfully sequenced the genes of the Tasmanian Tiger from its hair, revealing insights into mammal extinction and potential ways to prevent it. The study also opens up new possibilities for analyzing museum specimens and could potentially lead to the revival of extinct species.
Scientists at Harvard University have discovered a way to synthesize and control the formation of nanobristles into helical clusters. The finding has potential use in energy, information storage, photonics, adhesion, capture and release systems, as well as particle mixing and transport.
A recent study found that adding human hair waste cubes to commercial growth medium can increase plant yields relative to untreated controls. However, results showed lower yields compared to inorganic fertilizers, suggesting hair waste should not be used as a single source for fast-growing crops like lettuce.
A new study in the Journal of Consumer Research identifies four product claim structures that can be more effective in different situations. Consumers employ different logical strategies to counteract pitches, with alternative causes and disabling conditions affecting believability.
A new study published in Nature Cell Biology has discovered a way to increase the length of root hairs on plants, potentially improving crop yields. This method enables plants to take up minerals and water more efficiently, reducing fertiliser waste and promoting sustainable food production.
The researchers sequenced the mammoth's nuclear genome, yielding information about its evolution and extinction. They found that woolly mammoths separated into two groups around two million years ago and eventually became genetically distinct sub-populations.
CSIRO's Biotech Imaging team has created software to objectively test hair removal products' effectiveness. The technology uses images captured by a small scanner and algorithms to detect hair length and number, providing insights into growth and removal.
Researchers from Georgia Tech, University of Dayton, and others develop a stronger, more practical dry adhesive inspired by gecko feet. The new material creates directionally-varied adhesive force, with a gripping ability nearly three times that of real geckos.
A new study analyzing Oetzi's hair samples reveals his clothes were made from sheep and cattle fur, supporting the idea that he was a herdsman. The technique used could be faster and more reliable for checking animal hair products and aiding manufacturers in adhering to EU laws.
Researchers develop new technology to analyze hair interactions, finding that mechanical and chemical changes cause rough feel. The study aims to optimize hair care product formulas by understanding how different components affect hair-to-hair interactions.
Researchers Dagmar Voigt and Stanislav Gorb from the Max-Planck Institute for Metals Research discovered that mirid bugs' non-stick surface disrupts the adhesive properties of Roridula gorgonias' glue. The team found that the mirid bug's greasy coating prevents the glue from adhering to its surface, allowing it to evade capture.
Computer scientists develop algorithm to accurately capture hairstyle shape and appearance using multiple cameras and light sources. The method enables photo-realistic images of hairstyles from any angle, creating realistic highlights and animations.
A team of scientists discovered that mirid bugs possess a 30 times thicker coating than blowflies, which disrupts the glue's adhesive powers, allowing them to escape. The unique greasy layer prevents the glue from forming discrete blobs, instead running like a fluid over the surface.
Researchers discovered insects use air bubbles to survive underwater, but find limits to depth and surface area. The study found bugs can dive as deep as 30 meters without bubble rupture.
Research at MIT shows how insects trap air on their bodies to create an external lung, enabling them to stay underwater indefinitely. The stability of the bubble depends on the spacing of hairs on the insect's abdomen, which must be balanced with surface area for breathing.
Researchers found that performing a standardized 60-second hair count is a reliable method for assessing hair shedding in healthy men. The study found consistent results across age groups, with an average loss of 10 hairs per minute, and demonstrated low intrapatient variability.
A large genetic study of the extinct woolly mammoth has revealed that it did not have much genetic diversity and was split into two groups. The discovery rules out human hunting as a contributing factor to its extinction, instead pointing to climate change and disease.
New DNA analysis reveals that the original immigrants to Greenland came from a Siberian population, contradicting previous assumptions about their origins. The study found mitochondrial DNA similarities between ancient Greenlandic hair and eastern Siberia, suggesting a migration route via Alaska and Canada.
Researchers developed techniques to coax carbon nanotubes to self-assemble into complex structures, known as serpentines, which exhibit striking order and complexity. These nanotube serpentines have potential applications in nano-device development, such as cooling elements and opto-electronic devices.
A new study by Rohini Ahluwalia finds that buyers with a relational self-view, who prioritize connectedness, are more open to accepting brand stretches. This understanding can help marketers launch successful product extensions and expand their brand's reach.
Research found that people with migraine are more likely to experience exacerbated skin sensitivity or pain after daily activities, particularly those with chronic migraines. The study also identified risk factors for migraine progression, including allodynia and depression.
Researchers and volunteers have intensified the search for wolverine evidence in the Tahoe National Forest after a recent photograph was captured. Genetic analysis of scat and hair samples is underway to determine the animal's origin and sex, with potential implications for conservation efforts.
The International Agency for Research on Cancer confirms hairdressing and barbering as probably carcinogenic occupations, primarily due to exposure to permanent hair dyes. The use of certain colorants in these products has been linked to an increased risk of bladder cancer among male hairdressers and barbers.
Researchers found clumps of previously-unreported callus hairs growing in mature apples, which may impact commercial growers' storage strategies. The presence of these hairs could reduce the efficiency of gas transport through fruit, leading to internal browning.
Scientists at the John Innes Centre have discovered how roots use a growth control mechanism to find their way through soil and overcome obstacles. By exploring the soil in a similar way to humans navigating in the dark, root hairs can sense and adapt to changes in their environment.
Researchers create hair analysis method to track past movements of suspects or unidentified murder victims based on hydrogen and oxygen isotope levels. The technique helps identify general geographic areas where individuals drank water, providing a valuable lead for law enforcement.
Researchers developed a new synthetic adhesive that mimics gecko toe hairs, allowing for directional adhesion on smooth surfaces. The adhesive is made from hard plastic microfibers that become stronger with use and can detach without residue.
Researchers propose that carrying heavy infants safely on two legs may have driven the emergence of bipedalism. The study found a relationship between infant weight, hair friction and body angle that prevents safe carrying.
Scientists discovered that at least one percent of Neanderthals in Europe had red hair, a finding based on genetic analysis. This rare trait was linked to the mc1r gene mutation, causing lighter skin and more freckles.
Scientists found that at least 1% of Neanderthals were likely redheads due to a point mutation in the MC1R gene. The discovery suggests that Neanderthals' pigmentation may be as varied as modern humans', with implications for understanding the evolution of human traits.
Researchers analyzed hair samples from child mummies found in the Andes, revealing a 'fattening up' process before sacrifice. The children were likely chosen from peasant backgrounds and had their status raised through diet changes and symbolic cutting of their hair.
A novel method for sequencing ancient DNA has been developed using the Genome Sequencer FLX system, enabling researchers to study extinct animals with unprecedented accuracy. The technique involves extracting DNA from hair shafts, which are more undamaged and uncontaminated than traditional samples.