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New insights into cell communication in psoriasis suggest innovative drug treatments.

Skin and hair renewal is maintained by both fast and slow cycling stem cells, with hair regrowth primarily driven by specific stem cells in the hair follicle bulge. These cells can also help heal wounds and potentially treat hair loss.

Cholesterol balance is important for hair health, and problems with it can lead to hair loss conditions.

Substance P may worsen acne by increasing inflammation, but corticosteroids might help by reducing this effect.

Researchers created human hair follicles using a new method that could help treat hair loss.

The niche environment controls stem cell behavior and plasticity, which is important for tissue health and repair.

Short-chain fatty acids from *Cutibacterium acnes* cause skin inflammation, contributing to acne.

Wnt10b makes hair follicles bigger, but DKK1 can reverse this effect.

Dihydrotestosterone increases certain inflammatory signals in skin cells, potentially contributing to acne.

Vitamin D boosts a specific protein in skin cells linked to hair follicles.

The research suggests that p63 and TGF-β1 may help determine tumor type and malignancy in hair follicle and sebaceous tumors.

A specific enzyme is essential for proper hair follicle stem cell development and healthy skin.

Skin stem cells are crucial for maintaining and repairing skin, with potential for treating skin disorders and improving wound healing.

Progress has been made in skin and nerve regeneration, but more research is needed to improve methods and ensure safety.

Stem cells in hair follicles can become various cell types, including neurons.

Edar signaling is crucial for proper hair follicle development and function.

Dandruff might be caused by changes in how hair follicles naturally release oils and an immune response to this imbalance.

Wounded skin cells can revert to stem cells and help heal.

PPARγ is crucial for skin health but can have both beneficial and harmful effects.

Sebum from sebocytes is important for skin health and linked to conditions like acne and hair loss.

TSLP affects atopic dermatitis by increasing sebum and reducing fat through IL-4/IL-13 signaling.

Cell death shapes skin stem cell environments, affecting inflammation, repair, and cancer.

Hair follicles repair 3D injuries using a 2D healing process.

Low-level laser therapy helps hair growth and reduces hair loss with few side effects.

Isotretinoin's effects and side effects, like birth defects and depression, might be due to it causing cell death in various cells.

Different women's hair and skin glands respond to hormones in varied ways, which can cause unwanted hair growth even with normal hormone levels, and more research is needed to treat this effectively.

Local skin glucocorticoid production is crucial for healthy skin, and its disruption can lead to skin diseases.

Lower irisin levels in the blood may indicate more severe acne.

Increased HIF-1α is linked to the inflammation and severity of hidradenitis suppurativa, suggesting treatments that lower HIF-1α could help.

High proliferative activity and peripheral invasion indicate malignancy in canine sebaceous gland tumors; the term 'epithelioma' should be updated for clarity.