hyperpigmentation – mycolab.ai

Benefits and risks of hair, skin, and nail supplements in older adults

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This article reviews popular supplements that older adults, especially women, take to improve their hair, skin, and nails. While some supplements like nicotinamide show promise for sun-damaged skin, most lack strong evidence of benefit in healthy people. Important risks include biotin interfering with heart and thyroid tests, too much zinc causing copper deficiency, and excess vitamins A and E building up to toxic levels. Doctors should talk to older patients about these supplements and help them make informed decisions based on scientific evidence rather than marketing claims.

Electrospun Membranes Loaded with Melanin Derived from Pecan Nutshell (Carya illinoinensis) Residues for Skin-Care Applications

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Researchers developed new skincare membranes by combining pecan shell waste with advanced fiber technology. These membranes harness melanin from the shells to create materials with strong antioxidant and antibacterial properties that could protect skin from aging and infections. The innovation demonstrates how agricultural waste can be transformed into valuable cosmetic products that are both effective and environmentally friendly.

Antioxidant and Enzyme Inhibitory Potential of Streptomyces sp. G-18 Grown in Various Media

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Researchers studied bacteria called Streptomyces that were isolated from high mountains in Nepal to see if they could produce useful compounds. They grew these bacteria in four different types of growth media and tested the resulting extracts for antioxidant properties and ability to block harmful enzymes. They found that the choice of growth medium significantly affected what compounds the bacteria produced, with one medium (R2YE) being especially effective at producing compounds that could help treat diseases like Alzheimer’s and diabetes.

Synergistic impact of arbutin and kaempferol-7-O-α-l-rhamnopyranoside from Nephelium lappaceum L. on whitening efficacy and stability of cosmetic formulations

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This research demonstrates that a natural compound from rambutan seeds works synergistically with arbutin to create more effective skin whitening products. The combination is 35 times more potent than arbutin alone at preventing melanin production in skin cells. The resulting cosmetic formulation maintains its effectiveness and stability for approximately 5.2 months, offering a safer natural alternative to conventional skin lightening agents that can cause irritation.

Molecular Docking, Synthesis, and Tyrosinase Inhibition Activity of Acetophenone Amide: Potential Inhibitor of Melanogenesis

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Researchers developed new chemical compounds that can inhibit tyrosinase, an enzyme responsible for producing melanin (the pigment that colors skin). One compound, called 5c, proved exceptionally effective at blocking this enzyme—significantly more potent than existing skin-lightening agents. These acetophenone-based compounds could lead to improved cosmetic treatments for unwanted pigmentation like age spots and melasma, with better safety profiles than current options.

Development of dihydrooxyresveratrol-loaded nanostructured lipid carriers for safe and effective treatment of hyperpigmentation

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This research developed a new skin-brightening treatment using nanoparticles to deliver oxyresveratrol and its modified form (DHO) more effectively to the skin. The scientists improved the stability of these compounds by creating tiny lipid-based carriers that protect them from light damage and help them penetrate the skin barrier. Testing showed these formulations safely reduced melanin production without harming healthy skin cells, offering promise for cosmetic products to treat dark spots and hyperpigmentation.

Synthesis and biological assessment of novel 4H-chromene-3-carbonitrile derivatives as tyrosinase inhibitors

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Researchers developed new chemical compounds that can block tyrosinase, an enzyme responsible for producing excessive skin pigment that causes dark spots and discoloration. The most effective compound (6f) works better than kojic acid, a commonly used skin-lightening ingredient, and could lead to safer treatments for hyperpigmentation and related skin conditions. Computer simulations showed that one form of the compound fits better into the enzyme’s active site, making it more effective at preventing melanin production.

Multidirectional Characterization of Phytochemical Profile and Health-Promoting Effects of Ziziphora bungeana Juz. Extracts

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Ziziphora bungeana, a traditional medicinal plant from Kazakhstan, was studied for its health benefits. Scientists found it contains powerful plant compounds that fight bacteria and fungal infections, especially those causing skin problems. The extracts work similarly to commercial skin-lightening agents and show promise for treating infections and skin conditions without significant harm to healthy cells.

Identification of two novel thiazolidin-2-imines as tyrosinase inhibitors: synthesis, crystal structure, molecular docking and DFT studies

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Scientists created two new chemical compounds that are much better at slowing down the enzyme tyrosinase, which is responsible for skin darkening and browning of foods. These compounds were tested both in the lab and using computer models, and they worked about 14 times better than kojic acid, a commonly used anti-darkening ingredient. The research suggests these new compounds could be useful in cosmetics, food preservation, and treating skin conditions like unwanted pigmentation.

Systematic Review of Tinea Nigra: A Clinical Approach

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Tinea nigra is a rare fungal skin infection that causes dark spots, usually on the palms, and is most common in tropical regions. It primarily affects younger people and women. The infection is easily diagnosed using microscopic examination and treated successfully with topical antifungal creams like ketoconazole or Whitfield’s ointment, typically clearing within 4 weeks.

Disease: hyperpigmentation