Patent Application
20110271973
The present invention relates to liquid cosmetics for forming a double eyelid used for forming a double eyelid, and to a method for forming a double eyelid using the same. More specifically, the present invention relates to a solution for forming a double eyelid, the solution enabling extremely easy formation of a natural and ideal double eyelid by being applied onto a skin of an eyelid onto which a user want to make a fold, and relates to a method for forming a double eyelid using the solution for forming a double eyelid.
Cosmetics for making a single eyelid double can be classified mainly into a type of applying a solution onto a skin of an eyelid and a type of sticking a tape-like article on the skin of the eyelid. The former solution type has already been known as solutions described in Patent Documents 1 to 3. The latter tape type has already been known as tapes described in Patent Documents 4 to 6.
Further, the above-mentioned solution type can be classified mainly into a type of forming a fold of a double eyelid by being applied onto the skin of the eyelid to thereby adhere skins together, and a type of forming a fold of the double eyelid by being applied onto the skin of the eyelid to thereby form a coating harder than the skin of the eyelid so as to form a crease of the skin along the upper edge of the coating when the eyelid is opened.
In addition, the above-mentioned tape-type can also be classified mainly into a type of forming a fold of a double eyelid by adhering skins of the eyelid together with a double-sided adhesive tape, and a type of forming a fold of a double eyelid by sticking onto the skin of the eyelid a tape harder than the skin of the eyelid to thereby form a crease of the skin along the upper edge of the tape when the eyelid is opened.
However, these conventional solution-type and tape-type cosmetics for forming a double eyelid forcibly formed a fold of a double eyelid mainly by utilizing the coating or adhesiveness and hardness of the tape. Therefore, there have been problems that an unnatural double eyelid is liable to be formed and a displeased feeling and an uncomfortable feeling are given to a user.
In order to solve the above-mentioned problems, the Applicant proposed a double-eyelid forming article in Patent Document 7, which was completely different type from the conventional types. The double-eyelid forming article utilizes a resilient shrinkability of a resin tape or a string to shrink and deform a skin of an eyelid together with tissue directly under the skin. Then, the tape or the string is made to bite into the skin of the eyelid so as to form a constricted part along the tape or the string. As a result, when the eyelid is opened, the skin of the eyelid is naturally folded back at the constricted part to thereby form a fold of a double eyelid. As a result, compared with the conventional types, the double-eyelid forming article enabled formation of the more natural double eyelid without giving a displeased feeling or an uncomfortable feeling to the user.
However, use of the double-eyelid forming article requires a series of manipulation's including pinching both ends of the double-eyelid forming article with fingertips of both hands, sticking the double-eyelid forming article onto the skin of the eyelid while stretching the double-eyelid forming article, and thereafter cutting surplus parts at the both ends. Therefore, unaccustomed users sometimes have a little difficulty in handling the article, so the double-eyelid forming article leaves much room for further improvements.
A technical object of the present invention is to provide a solution for forming a double eyelid which enables extremely easy formation of a natural and ideal double eyelid without giving a displeased feeling or an uncomfortable feeling to a user, and a method for forming a double eyelid using the solution for forming a double eyelid.
In order to obtain the above-mentioned object, a solution for forming a double eyelid according to the present invention provides a solution for forming a double eyelid for forming a double eyelid by being applied to a skin of an eyelid, the solution according to the present invention includes: a solvent having volatility; and a base material which is dissolved in the solvent and forms a film closely adhered onto the skin of the eyelid with vaporization of the solvent, in which the base material having solubility contains a fibrous material which shrinks with vaporization of the solvent, and
the film shrinks by shrinkage of the fibrous material with the film being closely adhered onto the skin of the eyelid.
In this case, in the solution for forming a double eyelid, it is desirable that a shrinking ratio of the film on the skin of the eyelid range from 10% or more to 15% or less, and the film after shrinkage have resilient shrinkability and nonsticky.
Further, it is desirable that the base material be constituted only by the fibrous material, and content of the fibrous material occupied in the whole solution for forming a double eyelid preferably range from 5 weight % or more to 25 weight % or less.
Further, the fibrous material preferably be cellulose or a derivative thereof, more preferably be cellulose ester, and particularly preferably be nitrocellulose.
It is desirable that the solvent vaporizes by a body temperature.
Specifically, the solvent desirably be one kind selected from ethanol and ethyl acetate, or a mixture of ethanol and ethyl acetate.
Further, in order to achieve the above-mentioned object, a method for forming a double eyelid using the solution for forming a double eyelid according to the present invention includes: applying a solution for forming a double eyelid to a skin of an eyelid onto which a user want to make a fold, the solution for forming a double eyelid being formed by dissolving, into a solvent having volatility, a base material shrinking with vaporization of the solvent; vaporizing the solvent to thereby shrink a film made of the base material with the film being closely adhered onto the skin of the eyelid; forming, by shrinkage of the film, a concaved constricted part on the skin of the eyelid; and folding back the skin of the eyelid at the constricted part to thereby form a fold of the double eyelid.
According to the present invention, by merely applying a solution for forming a double eyelid to a skin onto which a user want to make a fold and vaporizing the solvent, a film of a base material adhered onto the skin of the eyelid shrinks to thereby form a concaved constricted part at the part on the skin onto which the film is adhered.
As a result, when the eyelid is opened, the skin of the eyelid is folded back at the constricted part, and hence a fold of a double eyelid can be formed.
As described above, the constricted part is formed at the part onto which the film is adhered with the effect of shrinkage of the film of the base material. Therefore, substantially entire of the film after shrinkage is disposed inside the constricted part and the usage state is hard to be noticed on appearance. In addition, when the eyelid is opened, the skin of the eyelid is naturally folded back at the constricted part to thereby form the fold of the double eyelid, and therefore a displeased feeling and an uncomfortable feeling are not given to the user.
Consequently, the present invention enables extremely easy formation of a natural and ideal double eyelid without giving a displeased feeling and an uncomfortable feeling to the user.
Further, the fibrous material is also superior in affinity for other cosmetics, and hence makeup holds well also on the part onto which the film 1a is adhered.
Hereinafter, an embodiment of a solution for forming a double eyelid according to the present invention is described in detail.
The solution for forming the double eyelid according to the present invention is provided for forming a fold of a double eyelid by being applied, onto the skin of an upper eyelid onto which a user want to make a fold, along the edge of the eyelid. The solution for forming the double eyelid according to the present invention mainly includes a solvent having volatility and a base material which is dissolved in the solvent and forms a film closely adhered onto the skin of the eyelid with vaporization of the solvent, the base material thereby contributing to formation of the fold of the double eyelid. Further, the base material mainly includes a fibrous material exhibiting shrinkability with vaporization of the solvent.
Therefore, shrinkage of the fibrous material with vaporization of the solvent causes the entire film made of the base material to shrink while closely adhering onto the skin of the eyelid. With the effect of the shrinkage, a concaved constricted part is formed on the skin of the eyelid onto which the film is adhered. As a result, when a user opens the eyelid, the skin of the eyelid is naturally folded back at the constricted part so that a fold of a double eyelid is formed. In this case, the film after shrinkage is mainly formed of the fibrous material in a shrunk state. Therefore, the film has resilient shrinkability and flexibility, and hence, it also has excellent adaptability to movement and expansion and contraction of the skin of the eyelid.
In this case, it is necessary that the film of the base material shrink while entirely being adhered closely onto the skin of the eyelid and the closely-adhered state to the skin be kept even if the eyelid is opened and closed after shrinkage. Accordingly, the film has close-adhesiveness to the skin, which prevents the film from exfoliating from the skin of the eyelid during shrinkage thereof or when the eyelid is opened and closed in an average user. At the same time, the film has a shrinking force which is larger than a tension (resilient force) on a surface of the skin of the eyelid and smaller than a shrinking force which forms wrinkles with shrinkage of the film in the direction of intersecting with the constricted part, the wrinkles being unnecessary for forming the fold of the double eyelid. More specifically, it is preferable that shrinking ratio of the film on the skin with vaporization of the solvent range from 10% or more to 15% or less. When the shrinking ratio is smaller than 10%, the shrinking force is excessively small, which causes a fear that a constricted part having a sufficient depth for forming the fold of the double eyelid is not formed. On the other hand, when the shrinking ratio is larger than 15%, the shrinking force is excessively large, which causes a fear that the constricted part becomes too deep and makes the appearance unnatural and gives the user a displeased feeling or an uncomfortable feeling. Further, it also causes the above-described fear that the wrinkles unnecessary for forming the fold of the eyelid are formed in the direction of intersecting with the constricted part.
In addition, in order to efficiently utilize effective properties of the fibrous material such as shrinkability so as to form a film which is ideal for forming a natural double eyelid on the skin of the eyelid, it is desirable that the solution for forming a double eyelid contain as little as possible, except for the case there is a necessity, film-forming ingredients having solubility to the solvent and acting in a direction of obstructing the effective properties of the fibrous material. Therefore, it is ideal that the base material having solubility to the solvent be composed only of the fibrous material. However, this does not hinder addition of soluble additives such as a moisturizing agent, antiseptic, perfume, pigments, and the like to the solution for forming a double eyelid within a range of substantially not obstructing effective properties of the fibrous material, the soluble additives being capable of forming a part of the film by remaining on the skin together with the fibrous material after vaporization of the solvent.
Further, similarly, it is also possible to add matters such as lamé which do not have solubility to the solvent and remain on the skin together with the base material such as fibrous material after vaporization of the solvent to the solution for forming a double eyelid within the range of substantially not obstructing the effective properties of the fibrous material.
Further, in order to form a natural and ideal double eyelid without giving a displeased felling like a sticky feeling, it is preferable that the film after shrinkage be nonsticking and nonadhesive as a rule. Therefore, it is preferable that the above-mentioned solution for forming a double eyelid do not contain sticking ingredients and adhesive ingredients as a rule.
It should be noted that, when the base material is composed only of the fibrous material, the content of the fibrous material occupied in the entire solution for forming a double eyelid preferably range from 5 weight % or more to 25 weight % or less, and more preferably range from 15 weight % or more to 25 weight % or less. When the content of the fibrous material is smaller than 5%, ratio of shrinkage with vaporization of the solvent becomes too small to form a fold of a double eyelid. On the other hand, when the content of the fibrous material is larger than 5%, the stickiness of the solution becomes so large that the solution lacks practicability.
As the above-mentioned fibrous material, cellulose or derivative thereof is suitably used. More preferably, cellulose ester such as nitrocellulose, cellulose acetate (acetyl cellulose), cellulose acetate butyrate (CAB), and cellulose acetate propionate (CAP) are used. Of these, the nitrocellulose is particularly preferably used.
However, the fibrous material is not particularly limited to the cellulose. Materials which can be directly applied to the skin, have solubility to the solvent, and exhibit shrinkability with vaporization of the solvent may be used. Further, combination of a plurality of kinds of fibrous materials filling the above conditions may also be used.
On the other hand, specific examples of the above-mentioned solvent can include one kind or a mixture of two kinds or more selected from oxyacid esters such as alpha-hydroxyisobutyric acid butyl, alpha-hydroxyisobutyric acid ethyl, alpha-hydroxyisobutyric acid isopropyl, methyl lactate, ethyl lactate, isopropyl lactate, butyl lactate, glycolic acid methyl, glycolic acid ethyl, glycolic acid isopropyl, and glycolic acid buthyl; ketones such as camphor, acetone, methyl ethyl ketone (MEK), methyl-n-propyl ketone, methyl isobutyl ketone (MIBK), methyl isoamyl ketone, cyclohexanone, diisobutyl ketone, and C-11 Ketone; esters such as ethyl acetate, isopropyl acetate, n-propyl acetate, n-butyl acetate, isobutyl isobutyrate, hexyl acetate, ethylethoxypropionate, 2-ethylhexyl acetate, dibasic acid ester, and texanol ester alcohol; glycol ethers such as propylene glycol monomethyl ether, ethylene glycol monomethyl ether, propylene glycol mono t-butyl ether, ethylene glycol monopropyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether diethylene glycol monomethyl ether, dipropylene glycol monometyl ether, and diethylene glycol monobutyl ether; glycol ether esters such as propylen glycol monomethyl ether acetate, ethylen glycol monoethyl ether acetate, ethylen glycol monobutyl ether acetate, ethylene glycol diacetate, diethylene glycol monoethyl ether acetate, and diethylene glycol monobuthyl ether acetate; alcohols such as methanol, ethanol, isopropanol, n-butanol, and isobutanol; and water.
Further, of these specific examples, one kind or a mixture of two kinds or more selected from ethanol, methanol, ethyl acetate, camphor, ether, and acetone are preferably used, and one kind or mixtures selected from ethanol and ethyl acetate are more preferably used.
However, the above-mentioned solvent is not limited to the specific examples mentioned above, and materials having volatility, being directly applicable to the skin, and capable of dissolving the fibrous material may be used. However, it is desirable that the material have volatility at room temperature or body temperature so that vaporization is further promoted when the solution is applied to the skin of the eyelid.
Hereinafter, with reference to
It should be noted that, in this example, there is used a solution for forming a double eyelid 1 constituted by dissolving, as a soluble base material, 15 weight % of nitrocellulose which is a fibrous material with respect to 85 weight % of ethanol which is a solvent.
In the above-mentioned solution for forming a double eyelid 1, the solvent has volatility at room temperature. Therefore, as illustrated in
However, forms of the container 2 for accommodating the solution 1 and the application means 3a for applying the solution 1 are not limited to the above. For example, the entire container 2 may be a pen type or the like, and the application means 3a may be a spatula type, a sponge type, or the like.
Incidentally, as illustrated in
In forming a double eyelid by applying the solution 1 to the eyelid 5, firstly, grease, dirt, makeup and the like stuck on the surface of the skin 5a of the eyelids to which a user want to make a fold are eliminated by face-washing or the like. Then, an imaginary line I extending from the adjacency of the inner corner of the eye to the adjacency of the outer corner of the eye is determined at the position along the edge of the eyelid at which a fold 5d of the double eyelid is to be formed. In this case, use of a thin pole-like stick (not shown) when required makes the determination of the imaginary line I easier.
Then, as illustrated in
As a result, as illustrated in
As a result, as illustrated in
Further, the film 1a containing only fibrous material as a base material contributing to formation of the fold 5d of the double eyelid is nonadhesive, does not have ingredients obstructing its resilient shrinkability, and has flexibility. Accordingly, the film 1a is extremely superior in applicability to the movement and expansion and contraction of the skin 5a of the eyelid 5. Therefore, extremely easy formation of a natural and ideal double eyelid also superior in lasting properties is enabled without giving a user displeased feeling and an uncomfortable feeling such as a sticky feeling and a twitch feeling.
It should be noted that, although the solvent of the solution 1 applied on the skin 5a of the eyelid 5 is vaporized by temperature of the eyelid 5, if formation of the double eyelid in shorter time is desired, the vaporization of the solvent may be promoted by utilizing wind of a drier or the like and hot wind.
In addition, although a stick required in order to form the fold of the double eyelid by using conventional cosmetics for forming a double eyelid is basically not necessary in forming a double eyelid by using the above-mentioned solution 1 for forming a double eyelid, this does not restrict use of the stick for more beautifully setting the fold of the double eyelid.
Further, the fibrous material is also superior in affinity for other cosmetics, and hence makeup holds well also on the part onto which the film 1a is adhered. Accordingly, after the formation of the double eyelid, makeup can be applied to the eyelid 5 using a foundation, an eye shadow, and the like when the need arises.
Hereinabove, an embodiment of the solution 1 for forming a double eyelid according to the present invention and a method for forming a double eyelid using the same is described. However, it is needless to say that the present invention is not limited to the above-described embodiment and various design modifications can be made within a range of not departing from the gist of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2009-017327 | Jan 2009 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP2010/051033 | 1/27/2010 | WO | 00 | 4/15/2011 |
