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    Glossary permeation

    movement of substances through a membrane or porous material

    Permeation refers to the process by which a substance, such as a liquid or gas, passes through a porous material or membrane. In the context of hair and scalp treatments, permeation is crucial for understanding how active ingredients in topical products penetrate the skin and hair follicles to exert their effects. This process is influenced by factors like the molecular size of the substance, the properties of the membrane, and the presence of enhancers that facilitate deeper penetration.

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    Research 10 of 1000+

    1. Permeation of topically applied caffeine through human skin – a comparison of <i>in vivo</i> and <i>in vitro</i> data 2009 · 82 citations
    2. Ion pairs of risedronate for transdermal delivery and enhanced permeation rate on hairless mouse skin International journal of pharmaceutics · 2011 · 34 citations
    3. Skin Penetration and Permeation Properties of Transcutol® in Complex Formulations AAPS PharmSciTech · 2024 · 29 citations
    4. Permeation of topically applied Magnesium ions through human skin is facilitated by hair follicles Magnesium research · 2016 · 20 citations
    5. Skin permeation of curcumin nanocrystals: Effect of particle size, delivery vehicles, and permeation enhancer Colloids and surfaces. B, Biointerfaces · 2023 · 15 citations
    6. Skin deposition and permeation of finasteride<i>in vitro</i>: effects of propylene glycol, ethanol and sodium lauryl sulfate Pharmaceutical Development and Technology · 2014 · 5 citations
    7. What women want - quantifying the perception of hair amount: an analysis of hair diameter and density changes with age in caucasian women British Journal of Dermatology · 2012 · 61 citations
    8. Perception of men with androgenetic alopecia by women and nonbalding men in Korea: how the nonbald regard the bald International Journal of Dermatology · 2002 · 26 citations
    9. Perception of Hair Transplant for Androgenetic Alopecia JAMA Facial Plastic Surgery · 2016 · 24 citations
    10. Perception of Baldness and Hair Density Dermatology · 2002 · 16 citations
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    Community 5 of 21

    1. Perception changes everything - 23M Reddit · 11 Aug 2026
    2. Oral Supplementation of Nicotinamide Mononucleotide (NMN) Improves Hair Quality and Subjective Perception of Hair Appearance in Middle-Aged Women Reddit · 20 Sept 2025
    3. Why the Brain Resists Updating Your Appearance: The Neuroscience Behind “It Happened Overnight” Reddit · 29 Jan 2026
    4. Balding young sucks, and here is why. Reddit · 9 Apr 2026
    5. Anyone else’s loved ones just blatantly gaslight you over your hair ? Reddit · 5 Jun 2023
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