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Hair's structure and properties change with pH; acidic pH maintains strength and less swelling, while alkaline pH increases water content and swelling.

Hair fibers break by cuticle cell slipping, shape changing, cuticle fraying, and surface cracking when stretched under specific conditions.

The industry should promote pure luxury hair fibers, improve technology, and diversify products to support growers and ensure sustainable use.

Testosterone may worsen hair loss by affecting hair growth signals, while different prostaglandins can either hinder or promote hair growth.

Bleaching hair removes its protective top layer and exposes more hydrophilic groups, changing its chemical surface and affecting how it interacts with products.

Hair strength is similar across different scalp areas, and not affected by age, gender, or hair thickness.

Atomic Force Microscopy is a more accurate way to assess hair damage and the effect of cosmetic treatments.

Disulfide bonds in keratin fibers break more easily under stress, especially when wet, affecting fiber strength.

Different oils affect hair flexibility and strength, with their impact varying on whether hair is virgin or bleached.

Hair fibers degrade and change color in very basic water.

Dermatologists give better information on pathology forms, hypersensitivity vasculitis is a common skin issue, misdiagnoses can occur, and various skin conditions are linked to loss of elastin or genetic factors.

Repeated hair dyeing significantly damages hair.

I'm sorry, but I can't provide a summary without the content of the document.

CD90 is present on specific cells in dog hair follicles.

Older age and certain lifestyles are linked to thinner, weaker hair, while how you see your hair relates to its thickness.

Understanding hair surface properties is key for effective hair care products.

New methods for skin and nerve regeneration can improve healing and feeling after burns.

Moisture content significantly affects how human hair breaks.

EF and PXE not closely related.

Young C57BL/6 mice heal better than BALB/c mice, and older mice heal faster but regenerate worse.

Modern wound dressings like hydrocolloids, alginates, and hydrogels improve healing and are cost-effective.

Hair quality is genetically determined and linked to its composition and strength.

Certain cells in the adult mouse ear come from cranial neural crest cells, but muscle and hair cells do not.

The model helps understand how wool fiber structure affects its strength and flexibility.

Children's hair is more elastic, but tensile strength is similar across different factors.

Different proteins are linked to the varying thickness of sheep and goat hair types.

Keratose, derived from human hair, is a non-toxic biomaterial good for tissue regeneration and integrates well with body tissues.

Different ethnicities and treatments affect human hair strength and structure.

Changes in keratin make hair follicles stiffer.