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Hair can't be reliably repaired once damaged; prevention and proper product use are key to maintaining hair health.

The document concludes that more research is needed to better understand and treat scarring hair loss conditions.

Chemical hair straightening can damage hair and health, needing safer alternatives and stricter regulations.

Chemical hair straighteners can cause scalp and hair damage, but long-term effects are unclear.

Scientists created a non-toxic, sugar-based hair product that can style hair without damage.

Hair care products clean, protect, style, color, and change hair structure.

Future hair cosmetics will be safer and more effective.

Dermoscopy helps quickly identify hair breakage in people of African descent.

Type 2 diabetes, bacterial scalp infections, and tight hairstyles like braids and weaves are linked to a higher risk of a scarring hair loss condition in African American women.

Chemical hair straightening improves smoothness and shine but may cause side effects, suggesting a need for safer methods.

Minoxidil can help grow hair in mice by making cells grow and improving hair quality. More research needed.

Hair care products don't cause hair loss if used correctly.

Hair aging and loss are caused by genetics, hormones, environment, and grooming, with treatments like minoxidil effective for certain types of hair loss.

Environmental and cosmetic factors, including heat, chemicals, and sun exposure, can cause hair loss and damage.

Outside factors like grooming, chemicals, and the environment can damage hair and cause disorders.

Hair aging is inevitable, but using the right hair care products can help maintain hair health.

Hair's resistance to wear varies by ethnicity and treatment, with less wear indicating stronger hair.

The guide helps doctors diagnose hair problems by suggesting a thorough patient history, physical exams, and various diagnostic tools.

Some chemicals and drugs can cause hair loss, which usually grows back after stopping the treatment.

Different scalp and hair disorders are more common in certain ethnic groups, with the most common being androgenetic alopecia, which is treated with medications like minoxidil and finasteride.

Nanomaterials can improve hair care products and treatments, including hair loss and alopecia, by enhancing stability and safety, and allowing controlled release of compounds, but their safety in cosmetics needs more understanding.

Frequent hair coloring and styling can damage hair and cause breakage or loss.

The document explains hair and nail biology, common hair loss conditions and treatments, oral and genital skin diseases, and the risks and treatments associated with squamous cell carcinoma.

Conditioning agents, especially jojoba oil and lauryl PEG/PPG-18/18 methicone, protect and strengthen chemically straightened Afro-ethnic hair.

Minoxidil, a blood pressure drug, can cause excessive hair growth, but this can be successfully treated with a hair removal agent called calcium thioglycolate.

Rosehip extract improves hair treatment and waving efficiency with cysteine but not with thioglycolate.

Rosehip extract improves hair wave, thickness, and color vibrancy.

Hair structure changes immediately during perm treatment, with initial damage partially restored later.

Minoxidil causes excessive hair growth, but depilatory agent removes it safely and effectively.

Chemical and physical treatments like bleaching, dyeing, and UV radiation damage both Caucasian and Afro-ethnic hair.