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Different ectodermal organs like hair and feathers regenerate differently, with specific stem cells and signals involved in their growth and response to the environment.

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

The skin is vital for protection, temperature control, fluid balance, immunity, and sensing, with damage affecting daily life and mental health.

Hair damage shows as fragility, dullness, and discoloration, varies by ethnicity, and is worsened by cosmetic procedures and diseases.

TRPA1 is crucial for mechanical sensitivity in skin sensory neurons.

RNAi-based biopesticides could be safe and effective for pest control with careful development and risk assessment.

Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.

Skin fat helps with body temperature control and has other active roles in health.

Finasteride slowly binds to 5-alpha-reductase, affecting enzyme stability and inhibitor potency.

Cationic polymers improved liposome stability and increased skin absorption of aciclovir and minoxidil.

The study found an efficient method to extract antioxidants from Hibiscus leaves.

Minoxidil breakdown varies by enzymes, affecting hair loss treatment effectiveness.

Liposomes improve finasteride delivery for hair loss treatment, making it a promising option for topical use.

Researchers developed a method to detect hormone-blocking drugs in wastewater and found them in Beijing's sewage, suggesting they can survive sewage treatment.

Ice-skating athletes often have skin problems due to cold, infections, and inflammation, needing careful treatment and prevention.

Keratin peptides can change hair shape gently without harsh chemicals.

Surface Plasmon Resonance is a useful tool for studying protein interactions and has potential for future technological advancements.

MicroRNAs play a crucial role in skin and hair health, affecting everything from growth to aging, and could potentially be used in treating skin diseases.

Nanoemulsion-based drug delivery systems are versatile and have potential for treating various medical conditions and improving vaccines.

Scalp cooling can help prevent chemotherapy-induced hair loss with a 50-90% success rate and is safe for patients.

Fadrozole and Finasteride change frog sex ratios and cause intersex animals with altered gene expressions.

Cosmetics and procedures can cause eye issues, from mild discomfort to serious conditions, due to allergies, toxins, or poor care.

Hairless mice lack fur due to a genetic mutation affecting skin response, not hormone issues.

Minoxidil-loaded liposomes effectively deliver to hair follicles, potentially improving hair growth and treating alopecia.

The conclusion is that measuring how drugs partition into artificial sebum is important for predicting their delivery into hair and sebaceous follicles, and it provides better information than traditional methods.

Diagnose and manage CCCA with thorough history, exams, and labs; treat with anti-inflammatory agents, stress reduction, and stopping harmful hair practices.

Oleic acid nanovesicles improve minoxidil absorption in hair follicles for alopecia treatment.

New pregnane derivatives are effective at inhibiting an enzyme linked to hair loss and reducing oil gland activity.

New psoriasis treatments are effective but come with side effects and risks.

Freezing brown seaweed right after harvesting and using microwave-assisted extraction with 75% 1,3-propanediol as a solvent is the best way to get polyphenols for cosmetics.