raw materials used in cosmetics. colorsperfumespreservativesantimicrobialantioxidantswater
TRANSCRIPT
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RAW MATERIALS USED IN COSMETICS
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RAW MATERIALS USED IN COSMETICS
COLORS PERFUMES
PRESERVATIVES
ANTIMICROBIAL
ANTIOXIDANT
S
WATER
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1.WATER
Why used…….• Cheap• Abundance• Innocuous• Universal Solvent• Used as solvent
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Filtration Membrane filters(0.2mµ) Distillation /Double distillation
Ion exchange system resins are used – to remove cations and
anions to form de-ionised water. Columns are made up of resins can be
regenerated. Reverse Osmosis – 75% purified water collected
and 25% as concentrated water Membranes are made up of cellulose nitrate
and polyamide.
Boiling Steam Condensation
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Microbiological purification Chemical treatment- Chlorine (1 to 4ppm) to de-ionised water. Formaldehyde also used .
Heat treatment –boiling –helding for 20 mins. For spores-boiling after 2hrs.
UV radiation – below 300nm-lethal effect on microbes.
Filtration – membrane filters
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COLORS A Generic term for any color imparting substance Colors can be classified as :1. Colorants: substances soluble in the medium which is to used 2. Pigments and color lakes: insoluble in the medium but coloring
achieved by uniform distribution3. Color lakes : Produced by precipitation of water soluble colorant
with aluminum hydroxide4. Water dispersible pigments: dispersed with the help of a
dispersing agent5. Color additive : dye, pigment derived from a vegetable derivative 6. Chrome: Vividness of a color7. Opacity: Degree of impenetrability by light8. Bleed: Leaching of an impurity or minor constituent from a
colored article
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Natural Colors
1. Cochineal2. Saffron3. Chlorophyll
InorganicColors
1. Iron oxide2. Chromium oxide3. Ultramarines4. Carbon black5. Titanium dioxide6. Zinc oxide
CoaltarColors
1. Amaranth2. Indigocarmine3. Orange G
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Type of Coloring agent Cosmetic product used
Water soluble colorants Bath products, creams, soaps, toothpastes and gels
Oil Soluble Colorants and pigments
face make up , lipsticks, soaps
Color lakes Eye make up, Lipsticks.
Water dispersible pigments Soaps
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EVALUATION OF COLOURED COSMETICS
OIL SOLUBLE PIGMEN
TS
DRY POWDE
R CONTAI
NED COLOUR
S
WATER SOLUBLE
BASED COLOUR
EMULSION
BASED MAKE
UP PRODUC
TS
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Type of PERFUMES Cosmetic product used
Top notes Aqueous or hydro alcoholic preparation
Bottom notes Oils based cosmetics and powders
Middle notes Soaps and emulsions
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PRESERVATIVES
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DEFINATION: Preservatives are used to prevent spoilage of skin cosmetics
TWO MAIN REASONS FOR SPOILAGE:
1. Oxidation of oils and fats2. Microbial growth
PRESERVATIVES
ANTIMICROBIAL ANTIOXIDANT
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SOURCES OF ANTI- MICROBIAL AGENTS:1.Raw materials2.Environment3.Equipment4.Packaging material5.Personnel
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Consequences1.Interfere with the ingredients
present2.Moulds and fungi can be seen on
the surface3.Turbidity and sedimentation in
liquid preparations4.Color change 5.Bubbles or froth formation 6.Pathogens can cause serious
infection
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Ideal preservative should be :1. Compatible with the formulation2. Soluble to such an extent that effective concentration
is achieved3. Remain stable to provide sustained anti microbial
effect4. Colorless and odorless5. Non toxic , non irritant and non allergic
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Factors affecting effectiveness of preservatives:A. Dissociation and pH 1. Ideal preservative effective at wide range of
pH but they are highly reactive in nature2. Weak acids depends on undissociated form
which in turn depends upon dissociation constant and pH of the system
3. Preservatives which are active only in dissociated form are effective in higher pH but ineffective at lower pH
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B. CONCENTRATIONNo values set for the concentration of preservative1. Some materials used are itself
antimicrobial so less preservative required
2. Some ingredients promote micro organisms hence more concentration
3. Recommended limit for organic mercury compounds( 0.001%) and 0.5-1% for weak acids
4. Availability to microorganisms more important since it depends upon permeability across the cell wall, diffusion rate and degree of absorption and partition coefficient of preservative
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Susceptibility of organisms1.Hydroxy benzoates active against moulds, fungi and yeasts, less active towards bacteria2. Chlorobutanol active against bacteria3. Phenyl mercuric nitrate active against all
Interference by ingredients of cosmetics1. Tween 80, polyethylene glycol interfere by
exerting protective effect on micro organisms2. Soaps and anionic surfactants in lower
concentration promote growth of gram negative bacteria
Influence of Solid ParticlesPreservatives can be absorbed on the surface of insoluble solid particles e.g . Kaolin, chalk and zinc oxide
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GUIDELINES FOR SELECTING PRESERVATIVES1. Identify the material that promote microbial
growth2. pH of the aqueous phase3. Preservative partitioned between two phases
depending on the formula of the preparation4. Ratio of total to free preservative estimated in
presence of macromolecules in formulation5. Least toxic
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CHALLENGE TEST FOR EFFECTIVENESS OF PRESERVATIVE
PRODUCT INNOCULATED BY SPECIFIED MICRO ORGANISM OF KNOWN CONCENTRATION ( 1X 108 PER ML
BRING THE TOTAL CONCENTRATION TO 1X105 PER ML
INOCULATED PRODUCT INCUBATED AND BACTERIAL COUNT DETERMINED AT 7,14,21 AND 28 DAYS
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ANTIOXIDANTS
1.COSMETIC PREPARATIONS CONTAINING FATS AND OILS HAVING UNSATURATED LINKAGE ARE SUSCEPTIBLE TO OXIDATIVE DETERIORATION
2.RANCID IS WHEN DETERIORATION CAN BE DETECTED BY ORGANOLETIC TESTS
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FACTORS AFFECTING RANCIDITY1. PRESENCE OF PRO-OXIDANTS OXIDISING ENZYMES KNOWN AS OXIDASES BECOME FAVOURABLE IN
PRESENCE OF MOISTURE, LIGHT AND OXYGEN AND CAUSE RANCIDITY2. OXYGEN PEROXIDES FORMED CAUSING AUTOCATALYTIC EFFECTS,
DETERIORATION FAST CAUSING FORMATION OF ALDEHYDES, ALCOHOLS ETC
3. MOISTURE MOISTURE ATTACK GLYCEROL ESTERS ACCELERATE AUTO-OXIDATION 4. LIGHT DOES NOT CAUSE OXIDATION BUT ACTS AS AN ACCELERATOR ONCE
PROCESS IS STARED5. HEAT REACTION IN OXIDATION WHICH IS ACCELERATED IS HYDROLYSIS6. EXTERNAL PRO- OXIDANTS MICRO- ORGANISMS CAUSES GLYCERIDES TO SPILT INTO GLYCEROL
AND FATTY ACIDS
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PHENOLIC TYPE• GALLIC ACID• METHYL GALLATE• BUTYL p- HYDROXY BENZOATE
QUINONE TYPE • TOCOPHEROLS• HYDROXY CHROMANS• HYDROXY COUMARONES
AMINE TYPE • LECITHIN• ETHANOLAMINE• GLUTAMIC ACID
ORGANIC ACIDS, ALCOHOLS AND ESTERS
• ASCORBIC ACID• CITRIC ACID• OXALIC ACID• MALIC ACID• SORBITOL
INORGANIC ACIDS AND THEIR SALTS
•SODIUM SULPHITE•SODIUM METABISULPHITE
CLASSIFICATION OF ANTI-OXIDANTS
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CHOICE OF ANTI-OXIDANT/ SELECTION DEPENDS ON
1.NATURE OF FAT OR OIL PRESENT AS INGREDIENT
2.PHYSICAL FORM OF COSMETIC3. PH OF COSMETIC 4.INTENDED USE OF COSMETIC5.EXPECTED SHELF LIFE OF COSMETIC6.CONDITIONS OF STORAGE OF COSMETICS