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As people age, their hair follicles produce less pigment, leading to gray and white hair, due to factors like reduced enzyme activity and damage to melanocyte DNA.

Spermidine may help reduce hair loss and deserves further testing as a treatment.

Topical calcitriol-analogs can reduce hair loss caused by chemotherapy.

Melanocyte stem cells are crucial for skin pigmentation and have potential in disease modeling and regenerative medicine.

Hair follicle stem cells help maintain skin health and could improve skin replacement therapies.

Hair thinning causes stem cell loss through a process involving Piezo1, calcium, and TNF-α.

Hair growth and health are influenced by factors like age, environment, and nutrition, and are controlled by various molecular pathways. Red light can promote hair growth, and understanding these processes can help treat hair-related diseases.

Applying a DNA vaccine to skin with active hair growth boosts immune response and protection against anthrax in mice.

New hair follicle-targeting treatments show promise for hair disorders but need more research on safety and effectiveness.

Platelet-rich plasma can help grow more and longer hair by creating new blood vessels.

Hair is important for protection, social interaction, and temperature control, and is made of a growth cycle-influenced follicle and a complex shaft.

Dexpanthenol helps human hair follicle cells grow by preventing aging and death, and by supporting growth signals.

Hair follicle studies suggest that maintaining telomere length could help treat hair loss and graying, but it's uncertain if mouse results apply to humans.

Alopecia areata is a chronic condition causing hair loss, with new treatments targeting the immune system showing promise.

Overexpression of sPLA2-IIA in mouse skin reduces hair stem cells and increases cell differentiation through JNK/c-Jun pathway activation.

A new small peptide may help hair growth by activating a specific receptor and should be tested in humans.

Eclipta alba extract was found to be effective in promoting hair growth in hairless mice.

Different genes are active in dogs' hair growth and skin, similar to humans, which helps understand dog skin and hair diseases and can relate to human conditions.

A protein called sFRP4 can slow down hair regrowth.

Dogs have varying numbers of touch-sensitive Merkel cells in different skin areas, with most in the oral mucosa and facial skin, unrelated to age, sex, breed, or color.

Japanese patients with alopecia areata often have a higher BMI and consume more vitamin C, fruit, and retinol, which may affect their condition's development or severity.

Tissue engineering could be a future solution for hair loss, but it's currently expensive, complex, and hard to apply in real-world treatments.

New digital tools are improving the diagnosis and understanding of irreversible hair loss conditions.

Scalp skin grafts effectively cover lower limb defects with high success and minimal complications.

T-regulatory cells are important for skin health and can affect hair growth and reduce skin inflammation.

Radiation therapy damages skin structure and immune function, causing inflammation and potential hair loss.

Melatonin may protect hair follicle cells from damage caused by a chemotherapy drug.

The best long-lasting results in treating hair loss may be achieved through combination therapy, including treatments like finasteride, minoxidil, and platelet-rich plasma injections.

Treating hair loss effectively may require a multi-sided approach, using different treatments together, and topical treatments could be more effective and safer than oral ones.

Light affects skin health, aging, and cancer risk, and new light-based treatments and imaging are promising for skin care.