LIPSTICK

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FORMULATION AND EVALUATION

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LIPSTICKS:

LIPSTICKS BY- NITIN B. GHAVANE M. PHARM ( 2 ND SEM.) PHARMACEUTICS S.N.I.O.P. PUSAD

DEFINITION:

DEFINITION Also called as lip cosmetics, widely used by women. It may be refer as color cosmetics . Lipstick is a cosmetic product containing pigments, oils, waxes, and emollients that applies color and texture to the lips . There are many varieties of lipstick. Lippy is a common British word for lipstick.

Characteristics of Lipsticks :

Characteristics of Lipsticks Characteristics of Lipsticks Should cover lips adequately Long last effect Make lips soft Must adhere firmly to lips without being brittle & tacky Good degree of quality Completely free from grittiness Non- drying Non- irritating to skin of lips Desirable degree of plasticity Should have high retention of colors intensity without any change in shades Pleasant odor & flavor Free from sweating Shiny & smooth appearance Easily applicable & removable Stable both physically & chemically

Composition : :

Composition : Wax mixture Oil mixture Bromo mixture Colors Preservatives Fragrance Antioxidants Surfactants & other additives

WAXES :

WAXES WAXES The gloss & hardness are generally depends on characteristics & quantity of waxes Best characteristic is obtained by using mixture of waxes of different m.p & adjusting the final m.p . by incorporating a sufficient amount of high m.p . wax.

OILS :

OILS OILS The oil mixture is required to blend properly with the waxes to provide a suitable film on the applied lip skin . Also acts as solvent in some formulation . Acts as dispersing agent for insoluble pigments. The ideal mixture of oil should produce the product, easily spread & produce a thin film with good covering power . Examples: Castor oil Tetrahydrofurfuryl alcohol (THFA) & esters Fatty acid alkylamides Paraffin oil Isopropyl myristate Isopropyl palmitate Butyl stearate

BROMO MIXTURE : :

BROMO MIXTURE : BROMO MIXTURE Maintain the physical form of the formulation Also called as bromo acids Two classes: -Red : gives red or reddish blue stain - Orange , red : gives pink to yellowish pink stain About 2-3% bromo acids are used in lipstick . Solvent used to be mixed with bromo acids: Castor oil & butyl stearate THFA & esters like acetate, stearate & benzoate Glyceryl monostearate or monolaurate & diethylene glycol monostearate PG or PEG

COLORS :

COLORS COLORS Most important from commercial & appearance point of view . In olden days, carmine was widely used, but nowadays various other are available. Color in lipstick is imparted by two ways : By staining the skin with soln of dyestuff which can penetrate the outer layer of skin ---- SOLUBLE DYES By covering the lips with a colored layer which serves to hide any skin roughness & give a smooth appearance ---- INSOLUBLE DYES Soluble Dyes / Staining Dyes : Example: Fluorescein , Eosin Insoluble Dyes / Nonstaining Dyes / lake colors : Example: Lakes of Calcium, Barium, Aluminium, Strontium Used in 10 – 15 % concentration based on shade TiO2 is generally used in conc. of 1% for pink shade

PRESERVATIVES :

PRESERVATIVES PRESERVATIVES Used to prevent microbial growth Example: 0.1 % propyl parahydrohybenzoate in 0.1% Higher conc. of preservative can cause slightly burning sensation or allergic reaction.

FRAGRANCE :

FRAGRANCE FRAGRANCE Essential component of lipstick Used to mask bad odor of fatty or wax Used to impart attractive flavor Conc. 2-4% Qualities for selection : - Free from irritating effect - Free from disagreeable taste - Stable & compatible with other ings .

ANTIOXIDANTS :

ANTIOXIDANTS ANTIOXIDANTS Incorporated to prevent rancidification of oily base during storage. Generally used in combination Example: -BHA , -BHT , - Propyl gallate , - Citric acid

SURFACTANTS & OTHER ADDITIVES :

SURFACTANTS & OTHER ADDITIVES SURFACTANTS :Used to promote wetting & stabilize the dispersion of insoluble pigments in lipstick base ADDITIVES: used for various purposes - Oil - soluble sunscreen: filter the sunrays & protect lip skin from sun burn. -Silicon fluid: used as fixative & prevent colors , from bleeding on lips . - PVP: (conc. 0.5 – 1%) film former on lips & reduce allergic reaction of other ings . in lipstick . - Isopropyl linoleate : prevent drying effect.

General Manufacturing Process :

General Manufacturing Process Melting and mixing Molding Labeling and packaging

Defects in lipstick :

Defects in lipstick Formulation related -Sweating -Bleeding -Blooming - Streaking -Seams . Mould related -Laddering - Deformation - Catering - Mushy Failure

EVALUATION OF FINISHED PRODUCTS :

EVALUATION OF FINISHED PRODUCTS Color control Determination of Melting Point (Heat Test ) Softening Point Microbial Testing Rancidity Rupture Test Breaking Load Test.

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