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Particles around 100 nm can penetrate and stay in hair follicles without passing through healthy skin, making them safe for use in topical products and useful for targeted drug delivery.

Different PIN proteins affect plant root hair growth by changing how auxin is transported.

Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.

The document describes how to tell different types of non-scarring hair loss apart by looking at hair and scalp tissue under a microscope.

Finasteride exposure in pregnancy causes genital abnormalities in male rats.

No single treatment is consistently effective for alopecia areata, and more research is needed.

Minoxidil can help grow hair in mice by making cells grow and improving hair quality. More research needed.

The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.

Hibiscus plant extracts may have health benefits like lowering blood pressure and protecting the heart.

Understanding how cells die in the skin is important for treating skin diseases and preventing hair loss.

Asia has made significant progress in tissue engineering and regenerative medicine, but wider clinical use requires more development.

Vitamin D has potential benefits for cancer prevention, heart health, diabetes, obesity, muscle function, skin health, and immune function, but clinical results are mixed and more research is needed.

Rhodococcus equi causes severe pneumonia in young foals, and effective vaccines are needed due to foals' weak immune responses.

Potassium channel openers are effective in treating heart conditions, high blood pressure, pulmonary diseases, bladder issues, and hair loss, but more selective drugs are needed.

The document concludes that while significant progress has been made in understanding skin biology and stem cells, more research is needed to fully understand their interactions with their environment.

The hydrogel with a 1:3 ratio of hydroxyethyl cellulose to hyaluronic acid is effective for delivering drugs through the skin to treat acne.

MIM is crucial for hair follicle formation and regeneration by controlling cilia formation and hedgehog signaling through its interaction with Cortactin and Src.

Hormones, especially androgens, play a big role in acne, but most acne sufferers don't have a hormone disorder. Hormonal treatments, including birth control pills, can be very effective for women whose acne doesn't improve with regular treatments.

Minoxidil effectively treats hair loss, but use cautiously and monitor side effects.

Macrophages help regrow hair by activating stem cells using AKT/β-catenin and TNF.

No effective treatment for frontal fibrosing alopecia was found, but oral 5-alpha-reductase inhibitors had the best response; for lichen planopilaris, topical corticosteroids were commonly used but had a high relapse rate.

The article concludes that the wool follicle is a valuable model for studying tissue interactions and has potential for genetic improvements in wool production.

The research identified various cell types in mouse and human teeth, which could help in developing dental regenerative treatments.

Adult female acne treatment should be personalized, considering individual preferences and pregnancy, using various topical and oral medications while managing side effects and resistance.

Hair grows faster in the morning and is more vulnerable to damage from radiation due to the internal clock in hair follicle cells.

Scientists turned rat thymus cells into stem cells that can help repair skin and hair.

Trilostane effectively and safely treats dogs with pituitary-dependent hyperadrenocorticism, improving symptoms and adrenal gland size.

Androgens have complex effects on hair growth, promoting it in some areas but causing hair loss in others, and our understanding of this is still evolving.

Different ethnic groups have unique hair growth patterns, with African hair growing slower and less dense, Asian hair growing fast but sparse, and Caucasian hair being densest; men are more likely to experience hair loss than women.

Minoxidil increases hair weight and count temporarily in men with hair loss.