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Glossary Skin Barrier

outermost skin layer protecting against pathogens and moisture loss

The skin barrier, also known as the epidermal barrier or cutaneous barrier, is the outermost layer of the skin that serves as a protective shield. It prevents the entry of harmful substances, pathogens, and excessive water loss, while also maintaining hydration and overall skin health. This barrier is primarily composed of lipids, proteins, and dead skin cells, and its integrity is crucial for preventing conditions like eczema and infections.

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Research

5 / 1000+ results

Allergens of Permanent Hair Dyes Induce Epidermal Damage, Skin Barrier Loss, and IL-1 Alpha Increase in Epidermal In Vitro Model

research Allergens of permanent hair dyes induces epidermal damage, skin barrier loss and IL-1 α increase in epidermal in vitro model

12 citations , December 2017 in “Food and chemical toxicology”

This study found that mixtures used in permanent hair dyes had irritant effects on reconstructed human epidermis, while individual ingredients alone did not.

Skin Barrier, Phenotypic and Genotypic Characterization of Autosomal Recessive Ichthyosis in TGM1-Deficient Jack Russell Terriers and Response to Topical Ceramide

research Skin barrier, phenotypic and genotypic characterisation of autosomal recessive ichthyosis in TGM1‐deficient Jack Russell Terriers and response to topical ceramide

August 2024 in “Veterinary Dermatology”

This study reported that topical ω‐0‐acylceramide improved skin barrier function in Jack Russell Terriers with TGM1-deficient autosomal recessive congenital ichthyosis, normalizing skin pH and reducing transepidermal water loss.

research Severe Skin Permeability Barrier Dysfunction in Knockout Mice Deficient in a Fatty Acid ω-Hydroxylase Crucial to Acylceramide Production

40 citations , July 2019 in “Journal of Investigative Dermatology”

In this study, knockout mice lacking the Cyp4f39 gene showed severe skin barrier dysfunction and high early mortality, suggesting its critical role in skin barrier formation and insights into ichthyosis pathogenesis.

research Caffeine improves barrier function in male skin

33 citations , September 2006 in “International Journal of Cosmetic Science”

This study found that applying caffeine significantly improved the skin barrier function of male volunteers by reducing transepidermal water loss compared to female volunteers.

research Conditional knock out of N-WASP in keratinocytes causes skin barrier defects and atopic dermatitis-like inflammation

27 citations , July 2017 in “Scientific Reports”

This study found that conditional knockout of N-WASP in keratinocytes of mice led to skin barrier defects, increased immune cell infiltration, and hyperproliferation of keratinocytes, indicating its crucial role in skin homeostasis.

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Community Join

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community Scalp Skin Barrier Health and Hair Follicle Cycling: A Potential Overlooked Connection

in Technology 4 months ago

The conversation discusses the importance of scalp skin barrier health in hair follicle cycling, suggesting treatments like ceramides or niacinamide to support hair growth. It also mentions the use of finasteride for hair loss.

community PP405 is NOT gray market jxl069

in Technology 26 upvotes 8 months ago

PP405 is a safer alternative to JXL069 for hair loss treatment because it penetrates the skin effectively and degrades in the blood, avoiding systemic toxicity. JXL069, when forced into the body, can cause dangerous side effects like lactic acidosis due to its inability to degrade safely.

community Topical Finasteride that doesn’t go systematic is the cure

3 upvotes 1 year ago

Topical finasteride that doesn't penetrate the skin could potentially treat hair loss without side effects. Current challenges include finding a formulation that remains on the scalp without increasing blood levels.

community Is this real chat? Finasteride -> fountain of youth and longevity drug?

559 upvotes 1 year ago

Finasteride is discussed as a hair loss treatment with benefits like reduced prostate enlargement and skin aging, but it is not seen as a "fountain of youth." Users report mixed experiences, including side effects like decreased libido and dry eyes.

community New to tretinoin, when to apply?

2 upvotes 8 months ago

The conversation is about using tretinoin to enhance the effectiveness of minoxidil for hair loss. Tretinoin should be applied at night on dry skin, and it can be used daily, either before or after minoxidil, with a starting dose of 0.025%.

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Learn

9 / 29 results

learn Folic acid

Is there a difference between taking folic acid supplements and using folic acid in topical hair products? Oral folic acid uses the body's normal absorption route and can correct a measured deficiency, but no published trial shows it treats hair loss; topical folic acid has no human evidence for hair growth and struggles to cross the skin barrier at all.

learn Overview

learn Epidermal Growth Factor

learn Neem Oil

natural substance from Neem tree with medicinal and pesticidal properties

learn Vascular Endothelial Growth Factor

learn sh-Polypeptide-7

learn Niacinamide

Can Niacinamide help reduce scalp irritation or dandruff? Niacinamide may help reduce scalp irritation and dandruff by improving skin barrier function.

learn retinol

Can retinol help enhance the absorption of ingredients like minoxidil or peptides? Retinol may enhance absorption of minoxidil and peptides by modifying skin barrier properties.

learn Linoleic Acid

How does linoleic acid work on the scalp when used in shampoos or oils? Linoleic acid helps maintain scalp health and supports hair growth by enhancing the skin barrier.

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Clinics

1 / 71 results

70
Hair Transplant
Medi Hair Loss & Scalp Clinic BarrieBarrie, ON · CA

Experts

1 / 3 results

36
SMP Specialist
Noelle Skin
Nice, France

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Noelle Skin