Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
2001-03-16
2002-09-17
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S274100, C424S688000, C424S063000, C424S064000, C424S069000, C424S070120, C424S070280, C514S937000, C514S938000, C514S844000, C514S845000, C514S846000, C516S022000, C516S053000
Reexamination Certificate
active
06451329
ABSTRACT:
TECHNICAL FIELD
The invention is in the field of cosmetic composition for application to skin.
BACKGROUND OF THE INVENTION
Oil and sebaceous secretions protect facial skin against moisture loss by forming a superficial film on the skin surface that locks in skin moisture. In general, reduced oil secretion causes dry skin and excessive oil secretion causes oily skin. Ideally the skin should be balanced, which means that the skin should secrete exactly the correct amount of oil to keep the skin hydrated and smooth, but not enough oil to give the undesirable shiny appearance or promote blemish formation. Since facial skin is rarely perfect, cosmetic manufacturers must formulate their products to ameliorate less than perfect skin types.
One particularly undesirable feature of oily skin is the resulting shine that quickly appears on the skin surface as oil is secreted by the skin. Shiny skin looks greasy. It also tends to show more imperfections than skin that exhibits a matte surface. One standard method of treating shiny, oily skin, is to apply cosmetics that contain various types of particulate absorbent agents. One example of such a product is “Cornsilk” a commercial loose powder. When the powder is applied to oily skin the various types of particulates absorb excess skin oil and matte the skin. One problem with Cornsilk and other products containing oil-absorbing particulates is that the particulates cake or streak in addition to providing a mask-like effect when the application is too heavy. In addition, layers of oil-laden particulates on the skin can clog skin pores and promote blemish formation.
Another approach to counteracting oily skin is found in the so-called “oil-free” cosmetic formula. The idea behind these products is not to aggravate the oily condition by adding oils to the cosmetic the user will apply to skin that already secretes too much oil. Low viscosity silicone oils, which tend to flash off fairly soon after the cosmetic is applied to the skin, are typically used in these formulas. One problem with “oil-free” formulas is that they do nothing to ameliorate the effects of excessive oil. Nor do such formulas do anything to minimize the undesirable shiny appearance of oily skin.
Clearly there is a need for cosmetic formulas that are capable of reducing the undesirable shiny appearance of skin having excessive oil on its surface, without overly matting the skin with absorbents that give a cakey, made-up look.
Most unexpectedly, it has been discovered that cosmetics formulated with mushroom extract are excellent for use on all skin types including oily skins. Such cosmetics are able to reduce the shiny appearance of skin and thereby aid in cosmetically improving the appearance of skin imperfections such as blemishes, wrinkles, and fine lines. At the same time these formulas do not provide the heavy made-up look that is often seen in compositions containing oil-blotting absorbent powders.
It is an object of the invention to provide a cosmetic formula for reducing the shiny appearance of skin having excess oil on its surface.
It is further object of the invention to provide a cosmetic formula for cosmetically improving the appearance of skin imperfections such as fine lines, wrinkles, and blemishes.
It is a further object of the invention to provide a pigmented emulsion foundation makeup for ameliorating the adverse effects of oily skin.
SUMMARY OF THE INVENTION
The invention comprises a pigmented emulsion cosmetic composition for reducing the shiny appearance of skin and cosmetically improving the appearance of skin imperfections, comprising a cosmetically effective amount of mushroom extract.
A method for reducing the shiny appearance of skin and cosmetically improving the appearance of skin imperfections, comprising applying to the skin a pigmented emulsion cosmetic composition comprising a cosmetically effective amount of mushroom extract.
The cosmetic composition and method of the invention is suitable for use on dry, normal, oily, or combination skin types. The resulting composition and method reduces the shiny appearance of oily skin and cosmetically improves the appearance of skin imperfections such as wrinkles, fine lines, and blemishes. The applied cosmetic provides a smooth, natural finish on skin.
DETAILED DESCRIPTION
All percentages mentioned herein are percentages by weight unless otherwise indicated.
I. The Composition
The composition of the invention comprises a pigmented emulsion cosmetic composition for reducing the shiny appearance of skin and cosmetically improving the appearance of skin imperfections, comprising a cosmetically effective amount of mushroom extract.
The term “reducing the shiny appearance of skin” means that the cosmetic composition containing an effective amount of mushroom extract, when applied to skin, reduces the shiny appearance of skin.
The emulsion composition may be a water-in-oil or oil-in-water emulsion comprising about 0.1-95%, preferably about 0.5-85%, more preferably about 1-75% water and about 0.5-35%, preferably about 1-25%, more preferably about 1.5-20% oil. Preferably the emulsion composition is an oil-in-water emulsion. The ingredients that may be found in this composition are further described below.
A. Mushroom Extract
The claimed composition comprises a cosmetically effective amount of mushroom extract. Generally, a cosmetically effective amount ranges from about 0.01-10%, preferably about 0.05-8%, more preferably about 0.1-7%. These percentages refer to the mushroom content only, not any liquid in which it is dispersed. The mushroom extract is preferably extracted from the pulp of a mushroom of the genus Fomes or Polyporus, e.g.
Fomes officinalis
or
Polyporus officinalis
. Particularly preferred is a mushroom extract sold under the tradename Laricyl® by Laboratoires Serobiologique. Laricyl® is an amber liquid having a pH ranging from 4.8 to 5.2 and a refractive index of 1.388 to 1.396 and is comprised of a solution of butylene glycol and mushroom extract having the INCI name Butylene Glycol (and) Mushroom (
Fomes officinalis
) extract.
Preferably the mushroom extract comprises mushroom pulp contact that is soluble at room temperature in butylene glycol—for example, sufficiently soluble as to be capable of forming a solution concentration of at least about 5% at room temperature.
B. Oil
The emulsion cosmetic composition comprises one or more types of oils that may be volatile, non-volatile or mixtures thereof. Preferably the total oil content is in the range of about 0.5-75%, preferably 1-70%, more preferably 5-65% by weight of the total composition. The term “volatile” means that the oil has a vapor pressure of at least 2 mm. of mercury at 20° C. The term “non-volatile” means that the oil has a vapor pressure of less than 2 mm. of mercury at 20° C. Either silicone or organic oils are suitable provided that the oils are compatible, i.e. soluble in each other.
1. Volatile Oils
Suitable volatile oils include silicones cyclic silicones having the general formula:
where n=3-6.
Also suitable are linear volatile silicones in accordance with the invention have the general formula:
(CH
3
)
3
Si—O—[Si(CH
3
)
2
—O]
n
—Si(CH
3
)
3
where n=0-6.
Linear and cyclic volatile silicones are available from various commercial sources including Dow Corning Corporation and General Electric. The Dow Corning volatile silicones are sold under the tradenames Dow Corning 244, 245, 344, and 200 fluids. These fluids comprise octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, hexamethyldisitoxane, and mixtures thereof
Also suitable as the volatile oils are various straight or branched chain paraffinic hydrocarbons having about 5 to 40 carbon atoms, more preferably about 8-20 carbon atoms. Suitable hydrocarbons include pentane, hexane, heptane, decane, dodecane, tetradecane, tridecane, and C
8-20
isoparaffins as disclosed in U.S. Pat. Nos. 3,439,088 and 3,818,105, both of which are hereby incorporated by reference. Preferred volatile paraffinic hydrocarbons have a molecular weight of about 70-225, pre
Russ Julio Gans
Sandewicz Ida Marie
Zamyatin Tatyana
Blackburn Julie
Channavajjala Lakshmi
Page Thurman K.
Revlon Consumer Products Corporation
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