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Many people had severe allergic reactions to a common hair dye ingredient, causing them to seek medical care and miss work.

Different soft tissue fillers can cause various skin reactions; biodegradable fillers are safer and non-biodegradable ones like silicone can lead to long-term problems.

Human beard hair medulla contains a unique and complex mix of keratins not found in other human tissues.

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

Tattooing helps treat skin conditions, reconstruct nipple-areola, mark radiation fields, and locate lesions.

The method effectively detects banned substances in urine for sports antidoping.

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

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

Different hair protein amounts change the strength of keratin/chitosan gels, useful for making predictable tissue engineering materials.

Bleaching hair removes its protective top layer and exposes more hydrophilic groups, changing its chemical surface and affecting how it interacts with products.

Kids with early graying hair often have low levels of calcium, ferritin, and vitamin D3.

Measuring reproductive hormones in brown bear hair could help identify their sex and reproductive state, but better collection methods or lab techniques are needed.

The arrector pili muscle might play a role in hair loss and needs more research to understand its impact.

Hair follicles are valuable for regenerative medicine and wound healing.

Different populations have distinct hair structures related to their ancestry.

Male faces age with more wrinkles and hair loss, influenced by both body changes and environmental factors.

The study found that variations in hair protein genes are likely due to evolutionary deletions or duplications.

Hair loss patients have different microbes in hair follicles, possibly affecting hair loss.

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

Using anabolic androgenic steroids can cause serious, lasting health problems in many parts of the body.

Merkel cells may have roles in sensing magnetic fields, creating fingerprints, Reiki energy healing, passing on environmental information to offspring, and influencing hair shape.

Modified stem cells from umbilical cord blood can make hair grow faster.

Both HPSAM and PLS methods accurately measure minoxidil and tretinoin concentrations.

Quick method to measure minoxidil in blood, accurate and useful for labs.

Bleaching and combing damage hair's surface and mechanical properties.

Dihydrotestosterone (DHT) doesn't affect rat skin cell growth, but it does change cell cycle, protein levels, and other cell functions, potentially shortening hair growth cycle.

Combining cosmetic procedures with lifestyle changes improves antiaging results.

The document concludes that careful surgical methods and choosing the right materials are key for successful scalp, skull, and frontal sinus reconstruction.

Elderly abuse is often by family members, and doctors, especially dermatologists, can spot it by looking for unusual injuries and malnutrition.

Analytical chemistry helps understand the makeup and use of ancient medicines, but it's complex and challenging.