Shampoo

very good for understanding shampoo

1. SHAMPOO Presented By Manish Jajodiya M.Pharm (Pharmaceutics)

2. INTRODUCTION Definition: A shampoo is a preparation of a surfactant (i.e. surface active material ) in a suitable form – liquid , solid or powder –which when used under the specified conditions will remove surface grease, dirt, and skin debris from the hair shaft and scalp without adversely affecting the user. The word shampoo in English is derived from Hindustani chāmpo. Shampoos are typically composed of 10 to 30 ingredients. Several types of ingredients are particularly important, including “Surfactants" that aid in cleansing and lathering. “Conditioners" and “Active ingredients" that affect the hair and scalp. “Additives" that stabilize the product.

3. REQUIREMENTS OF A SHAMPOO It should effectively and completely remove dust or soil, excessive sebum or other fatty substances and loose corneal cells from the hair. It should produce a good amount of foam to satisfy the psychological requirements of the user. It should be easily removed on rinsing with water. It should leave the hair non‐dry, soft, lustrous with good manage ability and minimum fly away. It should impart a pleasant fragrance to the hair. It should not cause any side‐effects/ irritation to skin or eye. It should not make the hand rough and chapped.

4. IDEAL PROPERTIES To make the hair smooth and shiny. Produce good amount of Foam. Should not cause irritation to scalp , skin and eye. Should completely, effectively remove dirt. Impart pleasant fragrance to hair.

5. CLASSIFICATION I. Based on Appearance: Powder Shampoos Liquid Shampoos or Lotion Gel Shampoos or Solid Cream Cream Shampoos Oil Shampoos Miscellaneous-anti dandruff, medicated shampoo

6. CLASSIFICATION II. Based on Use or Function: Conditioning Shampoos Antidandruff Therapeutic Baby Balancing Clarifying III. Based on Origin: Herbal Egg

7. ACTION All Shampoos contain Surfactants . Surfactant molecule has two parts—Hydrophilic head and Hydrophobic tail. At high concentration they form Micelle. When Shampooing , Anionic surfactants containing hydrophobic tail gets adsorbed to grease or dirt of hair. Thus, these dirt are removed by further rinsing.

8. RAW MATERIALS a)Water: This is the main ingredient in all shampoo recipes, comprising about 60-80% of the solution, inexpensive , it aids in diluting the cleaning agents, thereby reducing irritation, and makes the shampoo formula easier to spread on the hair and scalp. b)Surfactants: Surfactants are compounds that lower the surface tension of a liquid, the interfacial tension between two liquids. Surfactants may act as detergents, wetting agents, emulsifiers, foaming agents, and dispersants. c)Foam Boosters and Stabilizers: Used to increase Foam forming tendency. E.g.: Coco Diethanolamide used as foam booster and viscosity builder.

9. RAW MATERIALS d) Opacifiers : A chemical agent added to a material, such as rocket propellant, to make it opaque(not transparent or not allowing light to pass through). E.g.: Spermaceti. e) Clarifying Agents: To make clear by removing impurities or solid matter, as by heating gently or filtering. E.g.: Ethanol, propanol. f) Anti-dandruff Agents: Removal of dandruff from scalp of hair. E.g.: Selenium, Salicylic acid.

10. RAW MATERIALS g) Conditioning Agents: To offset the effects of surfactants, most shampoo recipes include conditioners to help smooth, soften and reduce brittleness. E.g.: Lanolin, Glycerol, Propylene glycol. h) Thickening Agents: or Viscosity Builders. What this basically means is – how to make shampoo thick and creamy , include salts and gums. Gums improve viscosity because of their gel-like properties. E.g.: Tragacanth gum, carboxy methyl cellulose.

11. RAW MATERIALS i) Sequestering Agents: Used to prevent precipitation of insoluble calcium , magnesium salts in hard water. E.g.: EDTA j) Perfumes: Shampoos include perfumes and pigments most are highly concentrated and used sparingly. E.g. :fruit fragrance k) Colours : Used to impart colour , different colours are used. E.g.: Strawberry.

12. RAW MATERIALS L)Preservatives: Shampoo formula containing water has the potential to be contaminated by pathogens. For this reason it is essential to include preservatives among shampoo ingredients, to prevent the growth of molds. Preservatives usually comprise only 0.1– 0.5% of the formulation.

13. SHAMPOO FORMULATION

14. QUALITY CONTROL TESTS a) Foam Stability: Cylinder shake method was used for determining foaming ability. 50ml of the 1% shampoo solution was put into a 250ml graduated cylinder and cover the cylinder with hand and shaken for 10 times. The total volumes of the foam contents after 1 minute shaking were recorded. The foam volume was calculated. Foam should retain for at least 5mins.

15. QUALITY CONTROL TESTS b) Dirt Dispersion: Put two drops of shampoo in a large test tube, 10ml dirt water and one drop of Indian Ink. Close the Test tube and shake for 5min. Estimate the amount of Ink in the foam. The dirt should stay in water portion. c) Wetting Action: Canvas disk is used, is one inch in diameter is floated on the surface of a solution and the time required for it to sink is measured accurately.

16. QUALITY CONTROL TESTS d) Viscosity: It is determined using Brookfield Viscometer. 100ml of shampoo is taken in a beaker and spindle is dipped in it for about 5min and then reading is taken.

17. QUALITY CONTROL TESTS e) pH: Mix 1gram of shampoo with 9ml of water and determine the pH using pH meter at 27 degrees Celsius.

18. QUALITY CONTROL TESTS f) Determination of Non-Volatile alcohol soluble matter: It is determined by calculating the chloride content. Take 10grams of sample in beaker, evaporate to dryness on steam bath, digest with 50ml of 95% ethanol. heat on steam bath for 2min.Filter the ethanolic solution through glass filtered funnel which is fitted to Buchner’s flask to which suction pump is applied. Wash the beakers 5times with 30%of hot ethanol and transfer to funnel. Transfer entire filter in the Buchner’s flask to wide mouthed flat bottomed flask.

19. QUALITY CONTROL TESTS flask in oven at temperature of 100 degrees Celsius till constant mass is obtained. Dissolve residue in 50ml water two drops of Methyl orange indicator, if solution is yellow in colour then neutralize with dilute nitric acid to get pink colour. Finally titrate with silver nitrate using Potassium chromate indicator. Carryout BLANK also. Chloride content in Shampoo(x)=V*0.584/100 %non volatile alcohol soluble matter=x/wt. of sample*100

20. QUALITY CONTROL TESTS g) Determination of free Alkali: Done by two methods. Ethanol method: Weigh 2 to 10grams of sample, digest with 200ml boiled ethanol on steam bath to mix well and filter it. Wash the beaker several times with hot ethanol, heat filtrate for few min two drops of phenolphthalein indicator and titrate with Sulphuric acid or Hydrochloric acid.

21. QUALITY CONTROL TESTS II. Barium chloride method: 10 grams of sample 100ml ethanol, Reflux for 15min. Shake frequently at 5 min interval 5ml Barium chloride to remove any traces of carbonates. Stop Reflux and allow to cool few drops of phenolphthalein indicator and titrate with Sulphuric acid.

22. QUALITY CONTROL TESTS h) Microbial Assay: Evaluation of preservative activity. I. Preparation of Pre- inoculum: Take a loopful culture of S. Aureus aseptically , transfer and sterilise. Cooled 100ml Soya bean Casein digestive medium mix and Incubate at 37degress Celsius for 24hours. II. Preparation of Pour plates: Sterilised Soya bean Casein digest agar 100ml , cooled to 40 degree, mix with 5ml of 24hours old pre- inoculated culture. Immediately pour in plates, allow to set .

23. QUALITY CONTROL TESTS Making WELLS on agar plates: Wells are dug on agar plates , take 100ml of sample. Add to well aseptically ,incubate at 37degress for 24 to 48hours. Observe Zone of Inhibition.

24. QUALITY CONTROL TESTS i) Skin – irritation Test: Draize test in Rabbits where a patch test technique is used on the intact skin of Albino Rabbits. A set of 6 Rabbits used for testing each material. Shampoos should be tested only for a short duration that is not more than (NMT) 4hours as these products come in contact with skin only for a short duration. These preparations are diluted between concentrations of 8 to 10%. These patches are then removed and the skin sites are scored for the changes on the surface of the skin like Edema , erythema formation . The products are then classified as----mild irritant , moderate and severe.

25. QUALITY CONTROL TESTS j) Skin Sensitization Test: Test on GUNIEA pig. k) Eye-Irritancy Test: On the basis of ability to cause injury to Cornea, Iris, Conjunctiva when the substances is applied to EYE. The test is carried out on Adult Albino Rabbits. Ocular reactions are read which unaided Eye. Readings are made 24,48,72hours at 4 and 7 days after treatment (or)as long as injury persists. Any preparation is called an Eye Irritant which shows Corneal and Iris lesions which persists even after 7days.

26. REFERENCES Harry’s Cosmeticology , Volume 1 of 2, 8 th edition, Published by chemical publishing Co. Inc. New york . Haward I. Maibach’s Handbook of Cosmetic Science and Technology, third edition, Published by Informa Healthcare USA Inc. New york - 10017 www.google.com