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Many substances, including chemicals and metals, can cause skin reactions; careful handling and identification of allergens are crucial to prevent dermatitis.

The document highlights various patents for new compounds with potential treatments for multiple diseases, including cancer, hormonal disorders, and diabetes.

A new hair transplant method showed promising results and a study found how deep a CO₂ laser can penetrate skin.

Grape seed oil improved hair quality the most, followed by rosehip and safflower seed oils, and reduced damage from shampoo.

Keratin from hair and wool is used in medical materials for healing and drug delivery.

Alkylation of human hair keratin allows for adjustable drug release rates in hydrogels for medical use.

Hair curvature in Japanese people is linked to specific cell types and filament arrangements in the hair cortex.

Studying premature aging syndromes helps understand human aging and suggests potential treatments.

The safety of placental and umbilical extracts in cosmetics is uncertain, requiring more research.

Certain treatments can increase protein binding to natural hair but are less effective on permed hair.

Certain small molecules and polymers can change hair's physical properties and how it feels by affecting the bonds within the hair.

Human hair can almost fully recover its structure within about 1,000 minutes after being stretched.

People with androgenetic alopecia may have a higher risk of severe COVID-19.

The document concluded that home treatments are needed for hair loss control, but professionals should better understand how these treatments work.

Progeroid mouse models show signs of early aging similar to humans, helping us understand aging better.

Epidermal stem cells don't use gap junctions to communicate.

Future hair cosmetics will be safer and more effective.

Beard cells, unlike scalp cells, produce growth factors in response to testosterone, which may explain differences in hair growth.

Cyclosporin A promotes hair cell growth and affects protein kinase C levels.

The study found a specific peptide that helps detect TGase 3 activity in skin and hair follicles.

The model better predicts how water-loving and fat-loving substances move through the skin by including tiny pores and hair follicle paths.

Most Indian people with hair loss in the study lacked nutrients, especially iron.

A protein in plants needs to bind two lipids to help with root hair growth, and this process is similar across different plant species.

Sex hormones like estrogen and testosterone may affect COVID-19 severity differently in men and women, potentially influencing prevention and treatment strategies.

Seaweeds contain beneficial compounds with potential uses in food, cosmetics, and health, but more research is needed to improve extraction and safety.

Intralesional steroids are more effective for hair regrowth in alopecia areata than NBUVB, but combining them doesn't improve results.

Hair lipids do not protect against humidity.

Different types of cell death affect skin health and inflammation, and understanding them could improve treatments for skin diseases.

Taking triterpenoids from Ganoderma lucidum over a long time can help slow down brain aging and improve overall health in mice.

Different sizes of keratin peptides can strengthen hair, with smaller ones possibly increasing volume and larger ones repairing damage.