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Pre-shave preparation with enhanced lubricity

Pre-shave preparation with enhanced lubricity description/claims

This invention generally relates to cosmetic compositions, more particularly to pre-shave compositions that reduce friction between the skin surface and razor and improve the feel of the skin.

Compositions applied to the skin prior to shaving known in the art generally seek to prepare the skin to receive a razor, providing lubrication and reducing friction to prevent irritation or cutting of the skin. With respect to preparations designed for electric shaving, typically, these compositions have the disadvantage of leaving the skin feeling greasy or oily, which is uncomfortable and unpleasant to the user.

When consumers use a pre-shave product in conjunction with an electric razor, they can sense the friction between the skin and the razor head(s). Friction can lead to uncomfortable skin irritation. But more importantly, friction between the razor head and skin will distort skin in front of the razor causing it to “bunch up” or create “a wave.” This effectively changes the angle of the razor head to the beard hair being cut and thereby greatly reduces the efficiency of the shaving process.

Many have attempted to increase the lubricity of pre-shave compositions by including high oil contents therein. These compositions have the typical drawbacks of high-oil vehicles, namely leaving a residue of oil on the skin, causing the skin to feel oily or greasy, which is unpleasant or uncomfortable to the user and may require additional treatment to the skin, such as washing or wiping with an oil-reducing toner to remove any oily residue.

To reduce these undesirable effects, some pre-shave compositions incorporate plate-form powders, such as talc. Plate-form powders have the characteristic of adhering to the skin or electric razor. Other pre-shave compositions incorporate globular powders. EP Application No. 0 385 312 A2 employs globular powders, such as nylon, polystyrene, polyethylene, and polyester, which are spherical in shape. Spherical powders have a ball bearing like effect unlike plate-like powders. Globular powders are dispersed in a high alcohol vehicle, and hence, the composition must be shaken prior to use to mix the contents. While these pre-shave compositions assist in improving lubricity and reducing oil residue, there is room for improvement. One deficiency with solely focusing on lubricity is that there is not a direct correlation between improved lubricity and closeness of shaving.

What is needed is a pre-shave skin composition that provides enhanced lubricity without having an oily feeling and/or leaving an oily residue. It would be beneficial if the pre-shave skin composition were able to have a low oil content. It would also be beneficial if the pre-shave skin composition were to provide an effective, efficient and pleasing shaving experience to the user.

In an aspect of the present invention, a composition to lubricate skin during shaving comprising at least one polyflouroalkyl dimethicone (also known as perfluorononyl dimethicone, PFD); a volatile component to serve as a carrier to said polyfluoroalkyl dimethicone; and a suspending agent to suspend the dimethicone in the volatile component, is provided.

It is another aspect of the present invention to provide a composition formulated to reduce skin friction between the electric razor and the skin surface, comprising, a polyfluoalkyl dimethicone, an hydro-alcoholic carrier, and a hydrocolloid to suspend the polyfluoroalkyl dimethicone in the alcohol carrier, is provided.

It is further aspect of the present invention to provide a composition formulated to reduce skin friction between an electric razor and a skin surface, comprising a polyfluoroalkyl dimethicone component, a volatile component that is the base of the composition and serves as a carrier to the polyfluoroalkyl dimethicone component, and a suspending agent to suspend the polyfluoroalkyl dimethicone polymer in the volatile component. The composition is quick drying to rapidly evaporate any moisture on the face and temporarily draw moisture from hair, such as beard hair or leg hair, to stiffen the hair. This action causes the hair to become stiffer, stand erect and make it easier for a razor, such as an electric razor, to cut the hair close to the skin. Harry's Cosmeticology 8th Edition, Martin Rieger Editor, 2000, p. 511-514. Further, the composition is in the form of a gel. Still further, the polyfluoroalkyl dimethicone component lubricates the interface between the skin surface and the electric razor.

It is yet another aspect of the present invention to provide a pre-shave composition that improves the feel to the skin.

These and other aspects of the invention and its particular features and advantages will become more apparent from consideration of the accompanying description.

A pre-shave composition for application to skin prior to shaving is described herein. The pre-shave composition is particularly effective for use with an electric razor by providing both improved lubricity and reduction of friction, but with low oil content, and without leaving an oily residue after electric shaving is completed. Compositions according to the present invention prepare the skin for shaving, while improving feel and look of skin after shaving, primarily by providing a preparation with a novel combination of ingredients. The composition reduces friction between the skin's surface and the razor and provides a closer shave, thus optimizing shaving performance. The invention also provides an improved feel to skin.

The composition generally comprises a polyfluoroalkyl dimethicone component and a suspending agent. The composition can further comprise a volatile component such as alcohol. Preferably the polyfluoroalkyl dimethicone component is fluorinated silicone, alkylfluorosilicone, fluorinated silicone polyether, or polyfluoroalkyl dimethicone. Most preferably the polyfluoroalkyl dimethicone component is polyfluoroalkyl dimethicone such as polyfluorononyidimethicone and the suspending agent is a hydrocolloid. Such combination achieves reduced skin friction between the razor and the skin surface, improves the feel of skin during and after shaving, and provides a closer shave.

The pre-shave composition utilizes polyfluoroalkyl dimethicone to impart lubricity. polyfluoroalkyl dimethicone polyfluoroalkyl dimethicone Suitable polyfluoroalkyl dimethicones are shown graphically in Formula 1:

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Patent Applications in related categories:

20090280080 - Aryl silicone polyester resins as hair glossers - The present invention relates to a series of novel silicone polyesters which are prepared by crosslinking an aryl dimethicone copolyol with a dimer acid. The reaction of the aryl dimethicone copolyol and dimer acid results in a polyester having affinity to oils and provides outstanding gloss on hair. ...

20090280080 - Aryl silicone polyester resins as hair glossers - The present invention relates to a series of novel silicone polyesters which are prepared by crosslinking an aryl dimethicone copolyol with a dimer acid. The reaction of the aryl dimethicone copolyol and dimer acid results in a polyester having affinity to oils and provides outstanding gloss on hair. ...


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Previous Patent Application:
Anhydrous cosmetic compositions comprising at least one silicone copolymer, at least one volatile silicone, and at least one non-volatile linear polydimethylsiloxane
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Cosmetic composition comprising a micellar, shell cross-linked copolymer
Industry Class:
Drug, bio-affecting and body treating compositions

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