Cosmetic products

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...

AI Technical Summary

Benefits of technology

[0037]Others such as C18 unsaturated carboxylic acids, can combat irritation on skin induced by co-ingredients. Yet others, such as vitamins, can act as antioxidants and thereby protect the skin from harmful external challenges. Still others can improve or disguise the appearance of hair on skin, such as by retarding its growth, either shorter and / or finer.

[0055]The product according to the present invention comprises at least one cosmetic active ingredient, for example one or more that can impart colour, such as a pigment, inhibit body odour generation, inhibit perspiration, impart moisturisation, combat ageing of skin, condition skin or hair, protect skin against exposure to sunshine and / or ameliorate sunburn or repel insects.

[0067]The antiperspirant active is often present at a concentration of from 0.1 to 35% by weight of a stick composition, particularly at least 5% by weight and in many very desirable compositions at least 15% by weight. Often, its concentration is not greater than 30% by weight, and in many effective compositions is up to 26% by weight. At low concentrations such as up to 5% by weight, the active is more noticeable as a deodorant, whereas at the higher concentrations and especially at above 10% concentration, it increasingly demonstrates effectiveness to reduce perspiration whilst retaining its ability to inhibit malodour formation.

[0095]Advantageously, the reference dispenser, and particularly if it is a bottom-filled dispenser, employs for at least one of its seals, a claw seal. This is an especially effective seal for preventing air ingress, by virtue of its tip flexibility.

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.

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