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

A new method can quickly and accurately detect drugs in hair.

In vivo confocal scanning laser microscopy is an effective, non-invasive way to study and measure new hair growth after skin injury in mice.

Nano-sized lipid particles increase dexamethasone's skin penetration and create a reservoir in the skin layers.

Hair texture changes with age due to varying levels of lipids.

Hydrolyzed wheat proteins penetrate all hair types effectively.

The DWLSM provides detailed imaging of hair shafts and follicles with high accuracy.

Finasteride-loaded microemulsions can effectively enhance skin delivery for treating hair loss.

Sunlight and chemical treatments change hair's internal structure differently, needing specific care.

Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.

The hair cuticle acts as a barrier against fungal infection, which occurs only deep within the hair follicle.

Frequent hair dye use caused significant hair and skin damage and affected the dogs' behavior.

Confocal microscopy is better than scanning electron microscopy for studying hair in its natural state and understanding hair products' effects.

The diagnosis of polycystic ovary syndrome (PCOS) requires a detailed patient history, ultrasound scanning, hormone level checks, and assessments of ovulation, obesity, and insulin resistance. It's a variable condition that needs individualized management and is a significant risk factor for type 2 diabetes.

Researchers developed a new method to identify animal hair in textiles, which is effective for various fibers and more reliable than previous methods.

Some children are born with unusually short, fine hair because their hair growth phase is short, but this often gets better by itself during puberty.

A 17-year-old developed woolly hair nevus in adolescence, which is unusual, and over time the hair darkened and straightened slightly, but microscopic changes persisted.

Environmental factors can greatly reduce drug levels in hair.

Researchers created a standard system to grade hair damage using microscopic images.

Hair treatments cause significant structural changes, especially with excessive heat, regardless of ethnicity.

Different hair cleaning methods caused varying levels of damage to the hair's outer layer.

Certain types of mucopolysaccharidoses cause significant hair abnormalities.

African hair is more fragile due to its unique shape and internal structure.

The four patients have a unique type of ichthyosis affecting hair follicles.

Different tests are used to see how hair care products affect hair, and choosing the right test is important for accurate results.

A dark-haired Chinese girl had hair that looked banded under certain light but was normal under a microscope.

The method shows that zinc pyrithione and climbazole from anti-dandruff shampoo effectively reach the scalp.

Curly hair breaks due to mechanical damage and environmental factors, not chemical makeup, and needs ongoing care to prevent breakage.

Loose Anagen Hair syndrome occurs in dark-skinned children and often improves on its own.

Explosions don't stop hair proteins from being used to identify people.