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Disulfide bonds affect the melting behavior of hair's crystalline structure, but hair retains some stability even after these bonds are broken.

Girard's reagent P improves detection of spironolactone and its metabolites.

The modified osmium method improves hair cortex staining for better visualization.

A new method using imidazole-based liquids efficiently extracts keratin from yak hair.

Thiadiazole chitosan conjugates improve hair manageability, moisture, and protection in conditioners.

Hair changes may indicate disease activity in pemphigus patients.

A new fluorescent material can detect dextran sulfate sodium, turning green when present, useful for forensic and environmental monitoring.

Nanoparticles in sunscreen are generally safe as they stay on the skin's surface.

Stretching wool changes its structure and improves fiber alignment.

Trichothiodystrophy is a condition with brittle hair and various physical and mental issues due to low sulfur in proteins.

The method effectively detects minoxidil in hair-growth products.

Polymer JR400 sticks to hair but washes off with detergent.

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

The method accurately measures certain steroids in human hair, showing different levels in males and females.

Researchers developed a quick and reliable method to test for betamethasone dipropionate and calcipotriol in ointments and drugs.

Prenatal diagnosis of trichothiodystrophy is possible in the second trimester using fetal eyebrow biopsy, with sulfur content analysis being more reliable.

Hair follicle testing is more reliable and effective for drug screening than urinalysis.

Traditional Chinese medications can cause skin reactions, and better testing and reporting are needed to identify allergens.

Bioré Pore Perfect strips effectively and safely clean pores on the nose.

Mercury exposure damages small nerve fibers in rats' skin.

A new method was created to test the effectiveness of Dihydrotestosterone (DHT) inhibitors, like finasteride and dutasteride, in human and fish cells. The results showed fish cells are more sensitive to these treatments, and dutasteride works better than finasteride in all tested cells.

Enzyme typing can reliably characterize human hair.

The method effectively identifies banned substances in hair loss and skin disease cosmetics.

Selenium disulfide shampoo effectively reduces dandruff and improves scalp health for all hair types.

The new herbal shampoo is effective, safe, and more affordable than other products.

Hair test results can be misleading due to external contamination, so they shouldn't be used alone to assess long-term drug use.

The method can identify minerals in hair from water, and using coconut oil or conditioner can prevent mineral buildup.

Trace elements like calcium, iron, and zinc are unevenly distributed in hair, while sulfur is even, and increased phosphorus and potassium levels are linked to skin reactions.