Articles tagged with Sunscreen
A new Australian study has provided direct evidence that zinc oxide nanoparticles do not penetrate human skin or cause cellular toxicity after repeated application. The findings support the use of ZnO nanoparticle sunscreens, outweighing perceived risks and improving consumer confidence in these products.
A new study led by the University of Queensland and University of South Australia found that zinc oxide nanoparticles used in sunscreen do not penetrate the skin or cause cellular toxicity after repeated applications. The research refutes widespread claims about the safety of nanoparticulate-based sunscreens.
Research at AAPS PharmSci 360 reveals that heat and reapplication significantly increase oxybenzone absorption, potentially affecting safety and toxicity. The study aims to establish an in vitro-in vivo correlation and inform maximum UV filter levels.
Researchers found significant quantities of TiO2 in beach waters off France, with concentrations ranging from 15-45 μg/L. The tiny nanoparticles can lose their protective coating under UV light or seawater composition, exposing toxic titanium dioxide to aquatic organisms.
Researchers detected high levels of sunscreen chemicals in Shenzhen waters and found they affect zebrafish embryo development. The effects vary depending on the chemical combination and exposure duration.
A world-first study found that regular sunscreen users in childhood reduced their risk of developing melanoma by 40 percent. The study analyzed data from nearly 1700 people and showed that sunscreen use was protective against melanoma in young people under 40 years old.
A study found that educational interventions significantly increased sunscreen use and decreased reported sunburns among operating engineers. The interventions resulted in a 38% decrease in never wearing sunscreen and an 18.6-5.8% reduction in reported sunburns.
A new study from Oregon State University-Cascades found that millennials are not getting the message about sun safety and the dangers of tanning. The research suggests that those with lower self-esteem and higher narcissism rates are more likely to exhibit addictive tanning behavior, driven by a desire for improved appearance.
Scientists develop method to produce shinorine in lab, increasing reliable supply and reducing environmental impact. The new process uses freshwater cyanobacteria as host cells for shinorine expression, resulting in higher production yields.
A team of Penn State researchers will assess endocrine-disrupting compounds in the Susquehanna River with citizen scientists. The project aims to empower volunteers to become part of the solution to water-quality problems related to emerging contaminants.
Scientists at King's College London have discovered a seaweed compound that can protect human skin from UV radiation without harming marine ecosystems. The mycosporine-like amino acid, palythine, has been shown to absorb harmful rays and offer antioxidant protection against cellular damage.
Researchers have discovered that visible light causes damage to skin cells, which is not blocked by conventional sunscreens. A colored sunscreen developed using nanoparticles coated with melanin provides protection against UVA, UVB and visible light.
A new study warns skiers and snowboarders about the risks of UV exposure to their eyes. The study found that people often miss applying sunscreen to areas around their eyes and eyelids, with serious consequences.
Scientists have created magnetic nanobiocomposite beads that can effectively remove oxybenzone, a coral killer found in sunblock, from seawater. The beads, made from environmentally friendly materials, can capture high concentrations of oxybenzone and have shown promising results in laboratory tests.
Researchers at Binghamton University developed a DNA coating that absorbs UV light more effectively the longer it's exposed. The film also keeps skin hydrated, slowing water evaporation and promoting faster wound healing rates in extreme environments.
Scientists at Lomonosov Moscow State University found that avobenzone, a popular UV filter in sunscreen products, breaks down into hazardous chemical compounds when exposed to chlorinated water and ultraviolet radiation. These compounds can be toxic and have been linked to liver and kidney dysfunction, as well as nervous system disorders.
A study published in The Journal of the American Osteopathic Association finds that vitamin D deficiency is widespread due to sunscreen use and inadequate sun exposure. Chronic diseases like Type 2 Diabetes and malabsorption disorders can inhibit vitamin D metabolism, leading to symptoms such as muscle weakness and bone fractures.
Patients with hyperpigmentation are more likely to use sunscreen, but few report reapplying it regularly. The study found that women and white/Hispanic patients were more likely to wear sunscreen, highlighting the importance of targeted education for these groups.
Scientists have made a breakthrough in developing longer-lasting sunscreens by studying the behavior of molecular ingredients. By using lasers to simulate sunlight, researchers found that up to 10% of sunscreen molecules can become stuck in an excited state, leading to degradation and reduced protection.
Scientists have introduced a new family of UVA and UVB filters inspired by natural sunscreen substances found in algae and cyanobacteria. These molecules are highly stable, enhance commercial sunscreen effectiveness, and offer improved sun protection factor.
A study published in JAMA Dermatology found that neither a beach umbrella nor SPF 100 sunscreen alone prevented sunburn completely, with 78% of those under an umbrella and 25% of those using sunscreen developing sunburn. The study highlighted the importance of combining sun protection practices for optimal protection against UV rays.
Brazilian researchers have identified a new species of dragonfly named Erythrodiplax ana, characterized by its brown spot on each wingtip and bluish waxy body coating. The discovery highlights the importance of urban areas as habitats for biodiversity, with the species found near a spring used to draw off water in an urban area.
A study published in JAMA Dermatology found that adults who frequently tanned indoors were more likely to practice poor outdoor sun protection and have multiple sunburns. The results highlight the importance of emphasizing avoidance of indoor tanning and reiterating the need for sun protection and skin cancer screening.
A recent study by researchers at Johns Hopkins finds that people with a history of nonmelanoma skin cancers still get sunburned, likely due to ineffective use of sun-protective methods. The study urges healthcare providers to better educate patients on protective skin care practices.
A Northwestern University study found that 40% of top-selling sunscreens on Amazon.com fail to meet water or sweat resistance standards. Consumers spend up to 3,000% more for similar products, highlighting a need for affordable and effective options.
Research found that 40% of top-rated sunscreens on Amazon don't adhere to AAD standards due to lack of water resistance. Consumers prioritize cosmetic aspects over photoprotection, highlighting the need for healthcare professionals to educate patients about sunscreen options.
Scientists have found that large, healthy-looking corals may be 'coral zombies' with no reproductive ability, making them useless in a recovery effort. The study suggests that oxybenzone, a common UV-filtering compound in sunscreen, is killing coral and causing DNA damage.
Researchers found that organosolv lignin enhances sun protection factor (SPF) in sunscreens, with one percent increasing SPF from 15 to 30 and 10 percent reaching almost 92.
Researchers developed a portable, disposable sunburn sensor made from safe and benign materials that can be easily calibrated for different skin tones and sunscreen levels.
A new CU-Boulder study found that online user ratings are only 57% correlated with objective product performance. Consumers rely heavily on average user ratings when making purchase decisions, despite the low accuracy of these ratings.
Researchers at Ohio State University found that SPF30 sunscreens delayed melanoma onset in a mouse model by 80% when applied prior to UVB light exposure. The study suggests the potential of these sunscreens as effective melanoma-preventing agents.
A new study by The Endocrine Society found that 13 out of 29 UV filters tested disrupted sperm cell function in human sperm cells, interfering with normal sperm functions necessary for fertilization. Some UV filters mimic the effect of female hormone progesterone, causing a temporary influx of calcium ions into the sperm cell.
Researchers have developed a new sunscreen called Solar D that maximizes vitamin D production while maintaining its SPF. The study found that Solar D allowed for up to 50% more production of vitamin D in-vitro compared to a popular commercial sunscreen, potentially reducing the risk of vitamin D deficiency and related health problems.
Researchers at Arizona State University found that desert microbes can significantly warm the surface by producing sunscreen-like compounds, increasing reflectivity and altering ecosystem services. This phenomenon, known as biological soil crusts or biocrusts, could have important implications for global heat budgets and climate models.
A Tel Aviv University study finds that oxybenzone, a common chemical in sunscreen lotions, is highly toxic to juvenile corals, causing coral bleaching, DNA damage, and death. Concentrations as low as 62 parts per trillion pose an ecological threat.
A five-year, $4.15 million grant will investigate how a high-fat diet interacts with common sunscreen chemicals like BP-3, which may mimic estrogen and increase breast cancer risk. The study aims to identify predictive markers for increased breast cancer susceptibility and develop prevention strategies.
Soldiers who served in Iraq and Afghanistan returned home with a higher risk of skin cancer, largely due to inadequate sun protection and lengthy daily sunlight exposure. The study found that only 13% of veterans routinely used sunscreen and 63% experienced at least one sunburn during deployment.
Scientists created a novel sunscreen from algae's natural molecules, combined with chitosan, to protect against UV rays. The material is biocompatible, heat-stable, and absorbs both UVA and UVB radiation with high efficiency.
A study surveyed patients about their knowledge of new sunscreen labels and found that most understood protection against sunburns but struggled with broad-spectrum protection. Fewer than half correctly identified terminology indicating skin cancer protection, leading to calls for improved labeling clarity.
A Northwestern Medicine study found that many people are confused by sunscreen terminology, with only 43% understanding SPF values and 7% knowing how to protect against early skin aging. This confusion can lead to inadequate protection against sunburns and premature skin aging.
The US market offers less effective sunscreens compared to European counterparts, which have approved eight superior formulations for better protection against UV-A and -B rays. Manufacturers are waiting for FDA approval since 2002, hindering product availability.
Researchers discovered that many fish, amphibians, reptiles, and birds can naturally produce gadusol, a compound providing protection from ultraviolet sunlight. This ability may have been obtained through prehistoric genetic engineering, with the gene found in algae transferring it to vertebrate animals.
Researchers from Oregon State University found zebrafish produce a chemical called gadusol to protect against UV radiation. Gadusol's successful production in yeast opens the door to large-scale commercialization.
A new study published in Nutrition Reviews finds that the type of health messaging is more effective depending on the target audience. For those highly involved in the field, negative loss-framed messages are most effective, while positive gain-framed messages resonate with the general public.
Researchers found that plants produce special molecules called sinapate esters to protect themselves from harsh ultraviolet-B radiation. These molecules appear to block UVB radiation from penetrating deeper into leaves, hindering plant growth. The study provides insight into the mechanics of how these natural plant sunscreens work.
Certain sunblock ingredients, like titanium dioxide and zinc oxide nanoparticles, can become toxic when washed off skin into ocean water. This toxicity affects phytoplankton, the microscopic algae that feed small fish and other marine animals.
A study published in the Journal of Behavioral Medicine found that fear and worry about skin cancer drive people's use of sunscreen, rather than information about the disease. The researchers suggest that addressing emotions may be crucial for designing effective public health interventions.
Research conducted at Texas Biomedical Research Institute found that sunscreen use in infancy and childhood reduces malignant melanoma incidence in adulthood by 10-fold. The study used a natural animal model, gray short-tailed opossums, to test the effectiveness of sunscreen against UV-induced melanoma.
A University of Colorado study shows that teens who watched a video about the cosmetic effects of UV exposure were more likely to use sunscreen than those who watched a health-based video. This finding suggests that addressing appearance-related concerns can be an effective way to modify sun-protective behaviors in teenagers.
The photochemical behavior of organic sunscreens in natural waters can influence their environmental fate and ecological risk. Research has shown that photolysis half-lives range from several hours to a month, with dissolved oxygen, pH, and water constituents influencing transformation rates.
A new study reveals that even low levels of daily UVA1 exposure can cause skin damage and premature aging. Researchers found that just two daily exposures can start the skin-aging process, highlighting the need for better sunscreens to protect against these damaging rays.
Researchers found sunscreen provides 100% protection against all three forms of skin cancer: BCC, SCC, and malignant melanoma. The study also revealed sunscreen shielded the p53 gene, which prevents cancer. No DNA changes were detected in skin samples where sunscreen was applied.
Researchers found that a less reactive form of titanium dioxide, rutile, is easier to wash off and causes less skin damage than the more common anatase form. This discovery aims to produce safer cosmetic and pharmaceutical products.
CSIRO and Larissa Bright Australia develop world's first coral-based sunscreen filters offering unparalleled UVA/UVB resistance. The breakthrough technology has the potential to set a new standard in broad-spectrum sunscreens, providing clear, colourless protection for consumers worldwide.
Researchers found that daily sunscreen use significantly slows skin aging, with a 24% decrease in photoaging compared to discretionary application. In contrast, a survey of 1,820 physicians revealed that only about 43% had basic electronic health record systems and 10% met meaningful use criteria, highlighting challenges in EHR adoptio...
Regular sunlight exposure is linked to lower risk of developing rheumatoid arthritis in older women due to increased production of vitamin D. However, younger women who cover up with sunscreen may not experience the same protective benefits, according to a large-scale study.
A low-cost sun protection intervention, including mailed kits with resources and educational activities, led to higher frequency of sun-protective behaviors among children. The study found significant gains in sun-protective behavior and awareness across all measures.
A new ACS video series provides an overview of the chemistry behind sunscreens, explaining how they protect against UV rays. The video also offers pointers on shopping for effective sunscreen products, highlighting the importance of SPF numbers in choosing the right product.
A possible link between benzophenone sunscreens and endometriosis has been identified by researchers. High levels of 2,4OH-BP were associated with an increased risk of endometriosis diagnosis in a study of 625 women.
A Stanford study found that Caucasians who avoid sun exposure have lower blood levels of vitamin D, with a 40% prevalence among all participants increasing to 53% and 56% among those wearing long sleeves and staying in the shade. The use of sunscreen did not significantly affect vitamin D levels due to insufficient application.