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Hair growth is cyclic and influenced mainly by local factors.

DNA profiling in forensics has improved, but predicting physical traits and ancestry from DNA has limitations and requires ethical consideration.

Human skin can make serotonin and melatonin, which help protect and maintain it.

The Rotterdam Study found risk factors for elderly diseases, links between lifestyle and genetics with health conditions, and aimed to explore new areas like DNA methylation and sensory input effects on brain function.

Air pollution worsens skin diseases and aging by causing inflammation and oxidative stress.

Alopecia areata is an autoimmune condition causing hair loss, influenced by genetics, stress, and diet, and may be prevented by a high soy oil diet.

Manage vitiligo with treatments, address emotions, and use camouflage techniques.

The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.

Chemotherapy can cause various skin reactions, with hair loss being the most common, and proper diagnosis and treatment of these reactions are important.

The Rotterdam Study aims to understand disease causes in the elderly and has found new risk factors and genetic influences on various conditions.

Zinc oxide nanoparticles in sunscreen do not penetrate deep into the skin.

Polymeric nanoparticles show promise for treating skin diseases.

Melatonin in the skin helps protect against damage from stress and UV rays, and could be used to treat certain skin conditions.

The Rotterdam Study updated its design and objectives in 2012, providing insights into various diseases in the elderly, including skin cancer, bone health, liver disease, neurological and psychiatric conditions, and respiratory issues.

Chitin and chitosan are useful in cosmetics for oral care, haircare, and skincare, including UV protection and strength improvement.

Stem cells are crucial for skin repair and new treatments for chronic wounds.

The document concludes that understanding hair follicle biology can lead to better hair loss treatments.

The Rotterdam Study aims to understand various diseases in older adults.

Chemotherapy causes hair loss by damaging hair follicles and stem cells, with more research needed for prevention and treatment.

The document provides a method to classify human hair growth stages using a model with human scalp on mice, aiming to standardize hair research.

Hair follicles help absorb and store topical compounds, aiding targeted drug delivery.

Pregnancy can cause various skin changes and diseases, with PUPPP being the most common skin condition specific to pregnancy.

Laser hair removal is the most requested cosmetic procedure and has become a scientifically-based treatment suitable for all skin types.

Lactate production is important for activating hair growth stem cells.

Visible light can damage skin and most sunscreens don't block it well; more research is needed on its effects and protection methods.

Dermatologists need to understand hair products to treat hair and scalp issues better.

Melatonin may benefit skin health and could be a promising treatment in dermatology.

Researchers created human hair follicles using a new method that could help treat hair loss.

Regenerated fully functional hair follicles using stem cells, with potential for hair regrowth therapy.

Chemotherapy can cause skin problems like hair loss, mouth sores, and skin darkening, and recognizing these can affect treatment decisions.