Drug – bio-affecting and body treating compositions – Live skin colorant containing – Lip
Reexamination Certificate
1999-01-13
2001-08-28
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live skin colorant containing
Lip
C424S401000
Reexamination Certificate
active
06280714
ABSTRACT:
The present invention relates to a care and/or treatment composition for human lips, containing acexamic acid [also known as acetamidocaproic acid or 6-(acetylamino)hexanoic acid]. This composition can be used in the cosmetics or dermatological field. Preferably, this composition is in the form of an optionally coloured, homogeneous, anhydrous stick, cream or gel containing this active agent. In particular, this composition can avoid drying-out, the formation of cracks or chapping, and can be useful for the treatment of existing cracks and chapping. It also makes the lips supple and soft, and can be used to resolve oedemas and suppress pain in the lips.
To protect the lips against drying out, lip balms in stick form are generally used. These balms contain treating oils, generally of plant origin such as triglycerides (see in this respect document JP-A-04,360,810). Unfortunately, even in large amounts, these oils do not treat the lips sufficiently, especially when they are swollen or cracked or chapped. In addition, the larger the amount of these oils, the greasier the feel of the balm, thus giving the lips an unaesthetic appearance and giving mediocre cosmetic properties in terms of application, i.e., greasy or heavy. It is thus desirable to limit this greasy appearance in a make-up product for the lips. Moreover, it is difficult at the present time to obtain lip products, with treating properties, which contain little or no oil of plant origin.
The subject of the invention is, precisely, a care and/or treatment composition for the lips which overcomes these drawbacks. Surprisingly, the inventors have found that the use of acexamic acid in a care or make-up base for the lips, of any type, allows them to be treated, prevents them from drying out and prevents the formation of cracking and/or chapping. In particular, the composition allows the lips to be made up and/or protected aesthetically while at the same time treating them, irrespective of the fatty phase of the said composition.
The invention applies not only to care and/or treatment products for the lips, but also to make-up products for the lips which have care and/or treating properties.
More precisely, the invention relates to a care or make-up composition for the lips containing acexamic acid, as physiologically acceptable active care agent, and a fatty phase containing this active agent, the fatty phase containing at least one oil selected from hydrocarbon-based oils having at least four carbon atoms, silicone oils, and fluorinated oils.
The acexamic acid can be used in particular in a proportion of from 0.05 to 10%, and better still from 0.1 to 5%, of the total weight of the composition. It can be in free form or in the form of a salt, in particular in the form of a zinc salt.
Preferably, the acexamic acid is in the form of a powder, which allows it to be incorporated easily into the fatty phase, in soluble or dispersed form, which is not always the case for an active agent in liquid form, which can have problems with emulsion stabilization and can require sophisticated apparatus to prepare certain emulsions thereof.
This composition can be used just as it is or it can be incorporated into a more complex composition. In particular, it does not feel sticky or greasy and is soft to apply, while at the same time treating the lips in a satisfactory manner.
For example, the composition of the invention can be in paste, solid, cream or even liquid form. It can be an oil-in-water or water-in-oil emulsion, a solid or supple anhydrous gel or a liquid oily phase. Preferably, it is in the form of an anhydrous solid composition and more especially in the form of a stick.
Preferably, the composition contains a certain amount of hydroxylated oil to dissolve the acexamic acid or to disperse it correctly. Advantageously, these oils have a hydroxyl group index ≧50 and <750. They preferably have at least four carbon atoms. More preferably, they are hydrocarbon-based oils.
As hydroxylated oils which can be used in the invention, mention may be made in particular of:
synthetic esters and ethers such as C
12
-C
13
alkyl lactate, isostearyl lactate, octyl hydroxystearate, octyidodecyl hydroxystearate, diisostearyl malate, propylene glycol monoisostearate, polyglyceryl-3 diisostearate and PPG-10 butanediol;
liquid triglycerides such as castor oil;
C
12
to C
26
fatty alcohols such as octyidodecanol, 2-hexyldecanol, 2-undecylpentadecanol or oleyl alcohol;
mixtures thereof.
It is, however, possible to use non-hydroxylated oils which may or may not be combined with the above hydroxylated oils. These non-hydroxylated oils can be hydrocarbon-based oils, silicone oils and/or fluoro oils. As hydrocarbon-based non-hydroxylated oil which can be used in the invention, mention may be made of:
liquid triglycerides of linear or branched, saturated or unsaturated fatty acids of 4 to 10 carbon atoms, which are liquid at room temperature, such as heptanoic or octanoic acid triglyceride, sunflower oil, corn oil, wheatgerm oil, soybean oil, marrow oil, grapeseed oil, blackcurrant seed oil, evening primrose oil, millet oil, barley oil, quinoa oil, olive oil, rye oil, safflower oil, candlenut oil, passion flower oil, musk rose oil, sesame oil, hazelnut oil, apricot oil, macadamia oil, sweet almond oil, avocado oil, cottonseed oil, lucerne oil, poppy oil or pumpkin oil, caprylic/capric acid triglycerides such as those sold by the company Stearineries Dubois or those sold under the names Miglyol 810, 812 and 818 by the company Dynamit Nobel, jojoba oil or karite butter;
synthetic esters and ethers, in particular of fatty acids, such as oils of formula R
3
COOR
4
in which R
3
represents a C
7
to C
29
higher fatty acid residue and R
4
represents a C
3
to C
30
hydrocarbon-based chain, such as purcellin oil, isopropyl myristate, 2-ethylhexyl palmitate, 2-octyldodecyl stearate, octacosanyl stearate, 2-octyldodecyl erucate, isostearyl isostearate; triisocetyl citrate, fatty acid heptanoates, octanoates, decanoates or ricinoleates; polyol esters such as propylene glycol dioctanoate, neopentyl glycol diheptanoate, diethylene glycol diisononanoate; and pentaerythritol esters;
linear or branched hydrocarbons of synthetic or mineral origin, such as volatile or non-volatile liquid paraffins and their derivatives, petroleum jelly, polydecenes, hydrogenated polyisobutene such as parleam or perhydrosqualene;
mixtures thereof.
The silicone oils which can be used in the invention are, in particular, linear or cyclic, volatile or non-volatile polydimethylsiloxanes (PDMS) which are liquid or pasty at room temperature, the polydimethylsiloxanes containing alkyl, alkoxy or phenyl groups, pendant or at the end of the silicone chain, these groups containing from 2 to 24 carbon atoms, such as triphenylmethicones, diphenyidimethicones, phenyldimethicones, polymethylphenylsiloxanes, diphenylmethyldimethyltrisiloxanes and phenyltrimethylsiloxydiphenylsiloxanes. The silicone oils can, furthermore, be fluorinated.
The hydroxylated oils represent preferably from 0.2 to 99.95% of the total weight of the composition, more preferably from 1 to 80%. The non-hydroxylated oils preferably represent from 0 to 99.95% of the weight of the composition, and better still from 0 to 50%.
The composition of the invention can also comprise any ingredient usually used in the field concerned, such as water, preferably in an amount ranging from 0 to 95% of the total weight of the composition, water-soluble or liposoluble dyes, antioxidants, essential oils, preserving agents, fragrances, neutralizing agents, liposoluble polymers, in particular hydrocarbon-based polymers such as polyalkylenes or polyvinyl laurate, gelling agents for an aqueous phase, gelling agents for a liquid fatty phase, waxes, gums, surfactants, additional cosmetic or dermatological active agents such as, for example, emollients, moisturizers (for example glycerol), vitamins, liquid lanolin, essential fatty acids, lipophilic or hydrophilic sunscreens, and mixtures thereof. The composition according to the invention
Arnaud Pascal
Breton Lionel
Finnegan Henderson Farabow Garrett & Dunner LLP
Howard S.
L'Oreal
Page Thurman K.
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