Barrier disruption treatments for structurally deteriorated...

A - Human Necessities – 61 – K

Patent

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Details

A61K 8/68 (2006.01) A61K 8/67 (2006.01)

Patent

CA 2234975

New topically applied treatments for structurally deteriorated or otherwise aged skin are shown by comparative data to effect structural improvements in the deteriorated skin, as shown by skin-thickening data. The disclosed treatments dirsupt the skin's water barrier and elevate trans-epidermal moisture loss (TEML) for extended periods of weeks or months and include methods of mechanical or solvent action, for example, tape stripping, or acetone washes. Preferred treatments use cosmetic creams or gels with active ingredients such as lactic acid as a primary, water-soluble barrier disruption agent, a retinoid, for example vitamin A palmitate as a lipid-soluble barrier disruption agent and a particular cerebroside to inhibit barrier repair. Such novel creams or gels can be applied daily for extended periods to provide chronic, sustained disruption of the barrier as indicated by significantly elevated TEML. Novel cosmetic formulations have particular application to improving the appearance and structure of sensitive facial areas of the skin.

De nouveaux traitements appliqués localement sur des peaux abîmées ou vieillies, se sont avérés, au moyen de données de comparaison, apporter une amélioration de la structure de peaux abîmées, comme le montrent des données d'épaississement de la peau. Ces traitements rompent la barrière d'hydratation de la peau, élèvent la perte d'hydratation transépidermique (TEML) pendant des durées prolongées portant sur des semaines ou sur des mois et consistent en des procédés mécaniques, tels que la dermoabrasion, ou à base de solvant, tels que des lavages à l'acétone. Des traitements préférés mettent en application des crèmes ou des gels cosmétiques comportant des ingrédients actifs, tels que de l'acide lactique en tant que premier agent soluble dans l'eau de rupture de barrière, un rétinoïde, par exemple, palmitate contenant de la vitamine A en tant qu'agent de rupture de barrière soluble dans les lipides, ainsi qu'un cérébroside spécial servant à inhiber la réparation de la barrière. On peut appliquer quotidiennement ces crèmes oucces gels pendant des durées prolongées, de manière à réaliser une rupture chronique et prolongée de la barrière, prouvée par un TEML considérablement élevé. Nouvelles formulations cosmétiques dont le but est d'améliorer l'aspect et la structure de zones faciales sensibles de la peau.

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