Barrier Function, Hair Coloring and Other Literature Findings

Sep 1, 2008 | Contact Author | By: Charles Fox, Independent Consultant
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Title: Barrier Function, Hair Coloring and Other Literature Findings
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Skin and Skin Care 
Barrier function in cosmetics: Imokawa has reviewed mechanisms of the skin barrier and its association with cosmetics. Barrier function in the stratum corneum plays an important role in protecting the skin from penetration of environmental substances or infection by epidemic bacteria. However, because the phenotype of barrier disruption on the skin is not easily detectable, it remains obscure as to what skin issues can be attributed to a barrier defect.

In this review, an in vivo methodology for evaluating barrier function is described to reveal factors that induce barrier disruption as well as the effects of barrier replenishing substances such as synthetic ceramides. The methods include TEWL, riboflavin technique, nicotinic acid technique and photoacoustic spectrometry (PAS). Recently, several lipids other than free ceramide, a known barrier modulator, have been implicated to serve as barrier modulators and particularly are associated with UVB-induced barrier disruption. These include covalently bound ceramide and glucosylceramide, which are added or reduced based on the down-regulated activity of transglutaminase, or beta-glucocerebrosidase, respectively.

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Fox: Barrier Function Footnotes

 a Neurometer electrodiagnostic sensory nerve conduction threshold testing equipment is manufactured by Neurotron Inc., Denver, Colo., USA. Neurometer is a trademark.

b Thermochromic Powder, LD-P is a leuco dye-powder created by Color Change Corp.

c Chloraprep is an antiseptic for medical procedures produced by Cardinal Health that contains 2% w/v chlorhexidine gluconate in isopropanol 70% w/w.

d Thermoase PC10F is a bacterial neutral metalloproteinase preparation derived from Bacillus stearothermophilus produced by Daiwa Kasei Products.

f Poly-Pore (INCI: Allyl methacrylates crosspolymer) is a series of products from Amcol Health and Beauty Solutions. Poly-Pore is a registered trademark.

g Polytrap (INCI: Lauryl methacrylate/dimethacrylate crosspolymer), a series of products from Amcol Health and Beauty Solutions. Polytrap is a registered trademark.

Formula 1. Collagen-promoting emulsion

Formula 1. Collagen-promoting emulsion4

Formula 2. Antiaging preparation

 Formula 2. Antiaging preparation5

Formula 3. Nonwash-off hair conditioner

 Formula 3. Nonwash-off hair conditioner7

Formula 4. Hair dye

 Formula 4. Hair dye8

Formula 5. After-straightener hair softening cream

 Formula 5. After-straightener hair softening cream9

Formula 6. Oxidative hair dye

 Formula 6. Oxidative hair dye10

Formula 7. Eyeliner

 Formula 7. Eyeliner12

Formula 8. W/O emulsion with glycerin derivative

 Formula 8. W/O emulsion with glycerin derivative13

Formula 9. Base formulation for microparticle matrix

 Formula 9. Base formulation for microparticle matrix14

Formula 10. Antifungal foam

 Formula 10. Antifungal foam15

Formula 11. Cleansing product for incorporation into nonwoven cloth

 Formula 11. Cleansing product for incorporation into nonwoven cloth16

Formula 12. Cosmetic film

 Formula 12. Cosmetic film18

Formula 1. Collagen-promoting emulsion

Formula 1. Collagen-promoting emulsion4

Formula 2. Antiaging preparation

 Formula 2. Antiaging preparation5

Formula 3. Nonwash-off hair conditioner

 Formula 3. Nonwash-off hair conditioner7

Formula 4. Hair dye

 Formula 4. Hair dye8

Formula 5. After-straightener hair softening cream

 Formula 5. After-straightener hair softening cream9

Formula 6. Oxidative hair dye

 Formula 6. Oxidative hair dye10

Formula 7. Eyeliner

 Formula 7. Eyeliner12

Formula 8. W/O emulsion with glycerin derivative

 Formula 8. W/O emulsion with glycerin derivative13

Formula 9. Base formulation for microparticle matrix

 Formula 9. Base formulation for microparticle matrix14

Formula 10. Antifungal foam

 Formula 10. Antifungal foam15

Formula 11. Cleansing product for incorporation into nonwoven cloth

 Formula 11. Cleansing product for incorporation into nonwoven cloth16

Formula 12. Cosmetic film

 Formula 12. Cosmetic film18

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