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Dihydrotestosterone affects hair growth by changing the Wnt/β-catenin pathway, with low levels helping and high levels hindering growth.

Hair follicle bulge cells don't help skin regrow after glucocorticoid damage; interfollicular epidermis cells do.

Insulin or IGF-I is needed for hair growth in newborn mice, while minoxidil helps adult mouse hair grow, suggesting a way to study human hair loss.

Early stage bald spots are linked to skin inflammation and damage to the upper part of the hair follicle.

New treatments are available for managing ingrown hair inflammation.

Stem cell therapy is a promising approach for hair regrowth despite potential side effects.

Scientists made safflower seeds produce a human growth factor that could help with hair growth and wound healing.

Poplar seed hairs grow from the placenta at the ovary base, with endoreduplication playing a key role in their development, and share similar cellulose synthesis processes with cotton fibers.

Scalp flaps are used for reconstruction, considering factors like inelasticity, hair growth, and blood supply, with techniques adapting to age-related changes in vascularity.

Hair grafting is a key method for improving scars, especially in areas with hair, by transplanting hair to hide the scar while maintaining its original characteristics.

Non-invasive methods show promise for diagnosing skin diseases like psoriasis and lupus but need more research for regular use.

A specific DNA region is crucial for Foxn1 gene expression in thymus cells but not in hair follicles.

Fine wool sheep have more genes for wool quality, while coarse wool sheep have more for skin and muscle traits.

Scientists developed a method to grow human fetal skin and digits in a lab for 3-4 weeks, which could help study skin features and understand genetic interactions in tissue formation.

The tumescent technique improves hair micrografting by providing lasting anesthesia, reducing bleeding, and increasing patient comfort.

Young female Australian fur seals are losing hair due to low tyrosine and zinc levels and high pollution exposure.

The hand rejuvenation method makes hands look younger by improving skin and filling out tissues.

The authors suggest systematically sourcing new product ideas from various internal and external places to improve innovation.

RNA aptamers can specifically block FGF5-related cell growth, potentially treating related diseases or hair disorders.

The 830-nm wavelength was most effective at promoting hair growth in rats using low-level laser therapy.

Cold air and a chilled sapphire window both protect the skin during laser treatments, and work better with water or gel, especially for darker skin.

Adding stem cells to fat grafts for facial rejuvenation might improve outcomes, but more research is needed to confirm safety and effectiveness.

Hair restoration techniques like follicular unit transplant surgery and follicular unit extraction are effective, with ideal graft placement density between 20-30 units per cm². Medications like Minoxidil and Finasteride can help maintain and regrow hair.

FUE and FUT hair transplants have similar success rates, with FUE slightly better.

Direct excision techniques can rejuvenate the neck but may not enhance the jawline and could cause neck-face disharmony if done incorrectly.

Adding de-epithelialization to the follicular isolation technique improves hair transplant results for eyebrows and eyelashes.

Hair transplantation techniques have improved over 12 years, with follicular unit grafting providing more natural results and potential future advances in automation and genetics.

The enzyme type 1 5α-reductase is more active in the hair follicle's lower part than in the skin's outer layer.

Hair restoration surgery redistributes existing hair to achieve a natural look, with visible regrowth in 3-4 months and rare complications, mostly aesthetic.

Using minoxidil before and after facelift surgery can effectively prevent temporary hair loss without causing other complications.