Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
2001-01-08
2002-11-26
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S061000
Reexamination Certificate
active
06485731
ABSTRACT:
TECHNICAL FIELD
The invention is in the field of cosmetic compositions for application to nails and surrounding cuticle tissue.
BACKGROUND OF THE INVENTION
The application of cosmetic and personal care products to the skin almost always involves the formation of a film on the skin. For example, application of a foundation to the face involves formation of a colored film on the skin. The same is true of products such as lipstick, eyeshadow, blush, nail enamel, and nail treatment products. The product is applied to the appropriate keratinous surface and allowed to dry. A film is formed which adheres to the skin for the appropriate period of time before being removed by chemical processes, or washed off with water.
The attributes of a cosmetic film depend on the type of product that is being formulated. Still, no matter what type of cosmetic is being prepared, the film integrity is of importance. Film integrity plays a direct role in the wear, appearance, and durability of the cosmetic.
Accordingly, there is a need for methods and ingredients that will enhance the integrity of a cosmetic film that is formed upon a keratinous surface. Film integrity is particularly important for products that are applied to the fingernails or toenails and surrounding cuticle tissue because these extremities are exposed to a wide variety of environmental assaults such as abrasion, detergents, bumping, and so on. Accordingly, cosmetic films applied to nails and surrounding tissue should advantageously have excellent moisture barrier properties, be capable of forming a cohesive film on the area that exhibits improved resistance to typical environmental assaults, and in addition be aesthetically pleasing.
Unexpectedly, it has been discovered that formulating compositions applied to nails and surrounding cuticle tissue with less than 5%, more preferably less than 1% by weight of a fluorinated oil will provide compositions that exhibit substantially improved films.
SUMMARY OF THE INVENTION
The invention comprises a method for improving the integrity of a cosmetic film formed on fingernails, toenails, and surrounding cuticular tissue comprising applying to said surfaces a composition containing less than 5% by weight of a fluorinated oil.
The invention also comprises a nail and cuticle conditioning composition comprising 0.00001 to 5% of a fluorinated oil, and 10-99% of a non-fluorinated oil.
The invention also comprises a semi-permanent film forming composition comprising 0.00001-5% of a fluorinated oil, 5-99% solvent and 1-85% of a film forming polymer.
The fluorinated oil will improve the film integrity in a variety of ways. First, due to its water repellant nature, the fluorinated oil in the composition will cause the composition to exhibit improved moisture barrier properties when applied to the desired surface due to phase separation. In particular, the fluorinated oil separates from the core composition and acts as improved barrier. This in turn may cause improvement in conditions such as dryness, cracking, and other undesirable characteristics of the nails and surrounding cuticle tissue. Often these types of conditions are exacerbated by exposure of the hands to detergents, water, and other environmental assaults. In addition, the presence of a fluorinated oil in semi-permanent film forming compositions such as nail enamel, will improve the integrity of the film by causing the film formed to exhibit improved gloss, leveling, and mar resistance in addition to water repellency. The improved gloss is due to the fluorinated oil migrating to the surface of the film formed on the nail after the nail enamel is applied to the nail and dried, e.g. phase separation. The solvents evaporate in the drying process, leaving the fluorinated oil on the surface of the dried film. The resulting finish exhibits improved gloss, improved water repellency, and the superficial fluorinated oil layer improves mar resistance. The term “mar resistance” means that the dried film is not as readily scratched or scuffed. In addition, the improved leveling provided by the fluorinated oil enables the nail enamel film to be evenly applied without bubbles or other surface aberrations, which irregularities also impair the integrity of the film. A film that maintains its integrity is better able to protect the surface to which it is applied. The amount of the fluorinated oil is critical in achieving the desired phase separation. In particular, if the amount of fluorinated oil is too great there will be little or no phase separation and the compositions will not exhibit the desired properties. If the amount of fluorinated oil is too small, not enough of the oil is present to exhibit the desired properties.
The amount of fluorinated oil contained within the composition is within a very narrow range. In particular, if the fluorinated oil is present at more than 5% by weight, the resulting compositions may be unstable and may separate with time, and will not provide the benefits described herein. The compositions used in the method of the invention may be oil based compositions for conditioning nails and surrounding tissue, or they may be semi-permanent film forming compositions in the form of pigmented nail enamel, basecoats, or topcoats. While both types of compositions are capable of forming a film on the nails and surrounding tissue to which they are applied, the nail enamel type compositions form what is referred to as a “semi-permanent” film in that the film cannot be removed by soap and water alone, but requires removal by organic solvent based removers. The term “film” when used in accordance with the invention means the film formed by conditioning compositions such as lotions, creams and the like which may be removed by soap and water, as well as the semi-permanent films formed by nail enamel compositions such as basecoats, topcoats, and color nail enamel products that require removal by organic solvent compositions.
DETAILED DESCRIPTION
The invention comprises a method for improving the integrity of a cosmetic film applied to nails or surrounding cuticle surfaces comprising applying to the surface an effective amount of a composition comprising less than about 5% by weight of the total composition of a fluorinated oil. (All percentages mentioned herein are percentages by weight unless otherwise indicated.)
The invention also comprises a nail and cuticle conditioning composition comprising 0.00001 to 5% of a fluorinated oil, and 10-99% of a non-fluorinated oil.
The invention also comprises a semi-permanent film forming composition comprising 0.00001-5% of a fluorinated oil, 5-99% solvent and 1-85% of a film forming polymer.
I. The Method of the Invention
Any type of composition normally applied to skin or surrounding cuticle tissue may be suitable for use in the claimed method so long as that composition is a suitable vehicle for the fluorinated oil and requisite amounts of the fluorinated oil is stable therein. Examples of such compositions include nail and cuticle treatment creams, lotions, and the like as well as nail enamel compositions including basecoats, topcoats, nail strengtheners, and regular pigmented nail enamel. The integrity of the film formed is improved in moisture barrier properties, and in the case of semi-permanent films, those films exhibit improved gloss, mar resistance, and water repellency as well.
The compositions containing the fluorinated oil may be applied to the nails or cuticle tissue one or more times per day. In the case where the composition is a cuticle or nail conditioning cream or lotion, the composition may be applied as often as desired. In the case where the composition is a nail enamel composition, the composition may be applied one or more times per day or as often as instructed by the product manufacturer.
The fluorinated oil used in the method of the invention may be an organic oil or a silicone oil.
The composition used in the method contains less than 5% by weight of the fluorinated oil. Including more than 5% by weight may cause the composition to be unstable and prone to separation,
Calello Joseph Frank
Olsen Amy Lynn
Rosen Richard P.
Blackburn Julie
Howard S.
Page Thurman K.
Revlon Consumer Products Corporation
LandOfFree
Method for improving integrity of cosmetic films does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for improving integrity of cosmetic films, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for improving integrity of cosmetic films will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2958092