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Small amounts of DNA can be found in the hair shaft, especially near the root, but it decreases with hair treatments and washing.

Co-washing is gentler on hair but can cause residue buildup.

Hair analysis can somewhat track past testosterone levels but is influenced by factors like hair washing, growth rate, sex, and hair color.

All wiping methods are as effective as washing for removing cleaning agent from hair.

Surface and internal treatments can help prevent hair lipid loss during washing.

The document concludes that scalp disorders can be treated with hair washing, specific shampoos, medications, and sometimes surgery or hair transplants, but hereditary baldness is untreatable.

The normal range for the hair pull test is 2 hairs or fewer, and washing or brushing hair before the test does not affect the results.

Blond hair lightens more with visible light directly, while ultraviolet light lightens it after washing by damaging other hair parts.

COVID-19 can cause rashes and worsen existing skin conditions, and behaviors like frequent hand-washing can lead to hand dermatitis.

Your lifestyle and health can affect your chances of getting COVID-19; not enough sleep, lots of exercise, and hair loss can increase risk, while washing hands, eating fruit daily, and taking vitamins A and C can lower it.

Segmental hair analysis can track testosterone over time but needs adjustments for sex, hair color, and washing frequency.

Hair mineral analysis might help diagnose diseases early, but standard methods are needed.

Certain polymers can stick to hair and increase volume, working best at a pH of 7 to 9.

Traditional herbs in Amarasi District may help treat dandruff and hair loss.

MRSA infections can occur in hair transplant surgeries, so it's important to test for it before treatment, keep everything clean, and follow treatment based on test results.

Genetic testing for cancer risk can lead to early and life-saving treatments in people without symptoms.

Older age increases positive hair alcohol test results, and chest hair is a good alternative for testing; season affects results, with higher levels in winter.

Clean and sterile gloves showed no difference in scalp contamination during hair transplant surgery.

Hematin in shampoo helps repair and straighten damaged hair.

Ketoconazole lotion can improve hair regrowth for some people with androgenetic alopecia.

About 40% of women without hair loss and 60% with hair loss experience a lot of hair shedding, especially those under 50 with long hair.

A girl's severely tangled hair couldn't be fixed and had to be cut due to a rare condition called plica neuropathica.

Combining scalp photos with hair density and caliber measurements gives a more accurate assessment of hair loss.

Nanomaterials can make hair care products work better and safer.

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

Hair testing is a reliable method for detecting workplace drug use when done with proper sample preparation and confirmation.

Maria is losing a lot of hair and is considering using Rogaine.

Many COVID-19 survivors continue to experience symptoms like fatigue and concentration problems after recovery, possibly needing rehabilitation.

MALDI Imaging Mass Spectrometry is a useful method for studying skin conditions, but sample preparation is crucial for accurate results.

African American women report more hair issues and use different hair care practices than Caucasian women, and have different hair and scalp characteristics.