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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.

Thiol/disulfide balance is normal in male AGA patients but shifts towards oxidative stress with emotional stress and low vitamin D.

Selenium disulfide shampoo effectively reduces dandruff and is well-liked by users.

Using selenium disulfide on guinea pigs increased hair loss.

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

TTD hair brittleness is caused by multiple structural abnormalities.

Infrared and Raman imaging can non-destructively analyze hair structure and help diagnose hair conditions.

Enzymes xylanase and pectinase clean wool and specialty hair fibers effectively without damage, offering an eco-friendly alternative to soap and hot water.

Hair is hard to dissolve because of its complex proteins, but certain solvents that break specific bonds and hydrate can do it.

The study found that thioglycolic acid breaks down hair bonds more consistently than l-cysteine, which is less damaging to hair.

Hair coloring increases copper and calcium uptake, damaging hair and reducing shine.

L-phenylalanine and hydrolyzed eggwhite protein deeply penetrate human hair.

Stretching damages Caucasian hair's structure more easily than Asian hair.

Bleaching hair changes its structure and weakens it, which is important for understanding hair damage and creating treatments.

Washing permed hair after using thioglycolic acid helps reform strong bonds, making hair stronger.

Glyoxylic acid straighteners cause more protein loss but have similar hair strength effects as traditional alkaline straighteners.

Hidradenitis Suppurativa has genetic links, with certain gene mutations more common in patients and a third of cases having a family history.

Hair perms or treatments seem safe to use up to 3 to 4 times during pregnancy.

Cysteine formation on hair indicates damage, best detected at pH 4.5.

Understanding hair biology is key to developing better treatments for hair and scalp issues.

PX-12 may help treat psoriasis by blocking inflammation and cell death.

Perming significantly changes hair's molecular structure, while shampoo and conditioner do not.

The document concludes that biotin, folate, and RGD peptides are promising for targeting cancer cells with prodrugs, but the conjugates are not yet tested for use.

Chemical hair straightening changes hair proteins and mostly fixes broken bonds.

Different ethnicities and treatments affect human hair strength and structure.

Cysteine helps maintain keratin production in skin cells even when iron is low.

Brazilian keratin treatments can straighten hair but may contain harmful formaldehyde.

Cysteine-rich keratins evolved independently in mammals, reptiles, and birds for hard skin structures like hair, claws, and feathers.

New acne treatments show promise as alternatives to traditional therapies.

Dermatologists should use hair relaxers carefully to avoid hair and scalp damage, following specific guidelines for application and maintenance.