Mixtures lipstick

Keywords cosmetic, lipstick formulation, natural ingredient, mixture design, D-optimal 1.INTRODUCTION... 

A common problem in pre-formulation of the cosmetic product including lipstick is the optimisation of the mixture composition aimed to obtain a product with the required characteristic. Mixture design represents an efficient approach for solving such optimisation problem [10]. It has been proved to be an effective tool to select the best lipstick formulation [11]. 

In order to understand the relationship between the mixture component, physical properties and consumer acceptance of the lipstick, various lipstick formulations have to be produced. The physical properties of each formulation should be studied. The consumer acceptance towards the product also should be investigated. However, only a part of this work will be discussed in this paper. Here, natural waxes, oils and solvent have been used to produce natural ingredient based lipstick formulations based on the formulation suggested by the statistical mixture design. Contour plot and response surface graph were formed in order to understand the relationship between the mixture component and physical characteristic of the lipstick. 

Effect of mixture components on the viscosity and melting point of the lipstick... 

Lipstick and lip balms are usually concentrated suspensions of solid oils in a liquid oil, or in a mixture of liquid oils. The dispersed phase, about 60 mass%, comprises oils and/or wax that are solid at room temperature. The continuous phase, about 40 mass%, comprises an oil, or mixture of oils, that is liquid at room temperature. These products are formulated at relatively high temperature, where they are liquid, and are then cooled to allow a significant yield stress to develop. Lipsticks and lip balms contain a variety of waxes, oils, pigments, and emollients, including ... 

Lipstick is a mixture mostly of oils and waxes. These lipids dissolve the dyes and cause the lipstick to flow smoothly over the lips. They also help keep the skin of the lips soft and moist. 

Some cosmetic samples, such as creams, emulsions, lotions, lipsticks, etc. can be directly dissolved by the appropriate solvent (e.g., methanol, acetonitrile, dimetilformamide, tetrehydrofuran, ethanol, or mixtures) with the aid of manual or ultrasonic agitation and analyzed by chromatography or related techniques. Sometimes, however, the sample needs cleaning up before chromatographic determination, especially when gas chromatography is involved. 

Rgure 4 Chromatograms obtained from (A) a standard mixture containing benzophenone-3 (2-hydroxy-4-met-hoxybenzophenone or oxybenzone) 1 octyl dimethyl PABA (2-ethylhexyl-p-dimethylaminobenzoate) 2 4-methylbenzylidene camphor 3 octyl methoxycinnamate (2-ethylhexyl-p-methoxyc-innamate) 4 butyl methoxydibenzoylmethane (4-feit-butyl-4 -melhoxydibenzoylmethane) 5 (B) an extract from a lipstick, obtained by supercritical fluid extraction. (Reproduced from Scalia S (2000) Journal of Chromatography A 870 199-205.)... 

In addition to low-cloud point nonionics, the patent literature describes the use of some additional surfactants in ADDs. The use of a mixture of high- and low-cloud point surfactants is reported to provide benefit in terms of greasy soil cleaning. Low-cloud point nonionics are also used in combination with charged surfactants (anionic, zwitterionic) for removal of greasy soil such as lipstick. Examples include amine oxide, alkyl carboxy ethoxylate, or sulfobetaine. For automatic dishwashing tablets, the use of disulfonated anionics such as Dowfax 3B-2 or 2A-1 manufactured by Dow Chemicals has been reported to decrease the solubility rate and the friability percentage loss. ... 

Facial cosmetics are used to color lips, lashes, cheeks, and eyebrows. Most facial cosmetics consist of waxes, oils, pigments, dyes, and perfumes. Lipstick, for example, is composed of pigments and dyes suspended in a mixture of waxes and oils. The pigment, usually titanium dioxide, gives brightness and cover. The dye, usually a bromoacid dye such as tetrabromofluorescein (Figure 15-14), provides color. The oils and waxes provide a base to contain the pigment and dye and also help keep lips soft and moist. This is an important function of lipstick because lips excrete less sebum than skin and consequently tend to diy out more easily. 

Creams and lotions contain emulsions of water and oil. Lotions typically contain more water than oil, and the oils are usually liquids at room temperature. On the other hand, creams tend to have more oil than water, and the oils tend to be soHds at room temperature. Oils used in creams include ohve oil, mineral oil, and almond oil, and lanohn creams usually include waxes such as beeswax or camauba. Also, most creams and lotions contain perfumes to add pleasant fragrances. Lipstick is composed of pigments and dyes suspended in a mixture of waxes and oils. 

Silica gel 60 plates are used to identify lip cosmetics (57). The Rf values of some cosmetics dyes obtained from lipsticks are recorded in Table 4 along with their colors. A mixture of 15 ml of ethyl... 

It is difficult to analyze for the chromophores in waxy substances such as lipsticks and shoe polishes and the fluorescence background makes other analytical techniques, including Raman spectra with visible excitation, very difficult to obtain. Further, separation of the mixture of dyes and pigments used from the waxy substances such as bees wax is extremely tedious and difficult. Surfaces in which the forensic scientist may wish to observe lipstick or boot polish stains vary very widely. As examples, lipsticks [10] and shoe... 

Waxes are found in many plants and animals. A wax is an ester of a long-chain fatty acid and a long-chain alcohol. The formulas of some common waxes are given in Table 18.3. Beeswax obtained from honeycombs and camauba wax from palm trees are used to give a protective coating to furniture, cars, and floors. Jojoba wax is used in making candles and cosmetics such as lipstick. Lanolin, a mixture of waxes obtained from wool, is used in hand and facial lotions to aid retention of water, which softens the skin. 

The sensitivity and selectivity of SERRS can be exploited in forensic science by determining the nature of the dye mixture in situ from a single fibre, or from ink. SERRS was also used successfully for in situ analysis of chromophores in lipstick smears... 

The Food and Drugs Act, which includes the Cosmetic Regulations, defines a cosmetic as any substance or mixture of substauces manufactured, sold or represented for use in cleansing, improving or altering the complexion, skin, hair or teeth, and include deodorants and perfumes . Cosmetics therefore include, for example, lipsticks, mascara, eye shadows, nail polish, shampoos, non-fluoride toothpaste, conditioners, soaps, moisturizers, cleansers, hair dyes, hair permanents and depilatories. 

Definition Mixture of syn. fatty alcohols with 30-50 carbons in the alkyl chain Uses Surfactants emulsifier, stabilizer in cosmetics chemical intermediate in coatings processing aid, lubricant, dispersant in plastics food-pkg. adhesives thickener, moisturizer, pigment dispersant, oil binder, stabilizer in cosmetic creams, lotions, lipsticks, antiperspirants, and soaps Manuf./Distrib. Somerset Cosmetic Co. Variati TradeNames Unilin 550Alcohol C40-60 alcohols CAS 222400-19-3 Synonyms Alcohols, C40-60... 

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