Cosmetic products

Inactive Publication Date: 2009-12-31
CONOPCO INC D B A UNILEVER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0019]According to a second aspect of the present invention, there is provided a method for lengthening the period during which a compound that is susceptible to photo-destruction remains effective in a solid composition which comprises in a first stage identifying its susceptibility to UV or photo-destruction, in a second stage incorporating it into a cosmetic composition, and thereafter introducing the composition into a dispenser comprising a barrel having opposed first and second ends, the first end being closed by a cap and the second end comprising a base, a platform intermediate between the first and second ends and screw-threaded means for advancing the platform towards the first end mounted on or adjacent to the second end, in between the platform and the first end of the barrel, in which the dispenser permits a % weight gain after 21 days in the test procedure as defined herein of not greater than 150% of the % weight gain obtained in the reference dispenser.

Problems solved by technology

However, separate disclosure of elements of an invention does not direct the reader or user to simultaneously make the two selections simultaneously, and particularly does not direct the reader or user to make such selections simultaneously in order to improve the stability of that ingredient.

Method used

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Examples

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Embodiment Construction

[0021]The present invention is concerned with stick products displaying improved stability during exposure to ambient air, in visible and UV light, and is especially applicable where the air is humid. Such conditions are prevalent in various rooms of most houses in which cosmetic products are commonly stored, such as in or adjacent to a bathroom or shower-room or in the vicinity of wash hand basins, for example in order to facilitate bodily application of such products shortly after cleansing. Where the cosmetic composition contains an active ingredient that suffers from photo-destruction, the effectiveness of that ingredient is progressively impaired with the passage of time unless measures are taken to retard, ideally to zero, the rate at which the ingredient is destroyed.

[0022]The instant invention is of particular applicability to counter degradation of ingredients which is caused or accelerated by water, such as is present in humid air.

[0023]The present invention is of relevanc...

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Abstract

The photo-destruction of an ingredient that is susceptible to photo-destruction in a stick cosmetic product can be retarded by controlling the ingress of air through the base of the dispenser of that product. The invention is particularly suitable for antiperspirant compositions containing palmatine disposed within a bottom-fill dispenser.

Description

[0001]The present invention relates to cosmetic products particularly to anhydrous cosmetic products and more particularly to products for contact application.[0002]Cosmetic products for topical application to human skin comprise a cosmetic composition housed within a dispenser. For many products, the choice of dispenser is at the discretion of the producer of the product, and independent of the composition, provided that it satisfies generic considerations. Thus, for example, generally if the composition is in the form of firm stick, for dispensing from a stick dispenser, the composition needs to satisfy the generic criteria that it remains solid and integral at both use and storage temperatures. Choices as to shape of the dispenser and any mechanisms for dispensing the stick composition were made on the basis of the dispenser itself and did not take the composition into account. By the same token, when selecting ingredients for a stick composition, the selection has been made on t...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A45D40/04
CPCA45D40/06A61K8/0229A61K8/28A61Q15/00A61K8/4926A61K8/67A61K2800/87A61K8/361
Inventor BATCHELOR, STEPHEN NORMANWILLIAMS, JASON RICHARD
Owner CONOPCO INC D B A UNILEVER
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