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Thickening agents in cosmetics


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Thickening agents in cosmetics

  1. 1. Thickening Agents InCosmetics By Anay.Nilesh.Kacharia
  2. 2. Role Of Thickening Agent in Cosmetic
  3. 3. Principles involved in Thickening• Stokess law - is the basis of the falling-sphereviscometer, in which the fluid is stationary in a verticalglass tube. A sphere descends through the liquid. itreaches terminal velocity, which can be measured by thetime it takes to pass two marks on the tube.• Thixiotropy - It is a property of certain gels which tendto flow on the account of stress applied on it.
  4. 4. Classification Of Thickening Agents• Lipid Thickeners- (Beeswax, Cetyl alcohol,Steryl alcohol )• Naturally Derived thickeners- (Modified Cellulose,Guar gum, Xanthan Gum, Gelatin )•Synthetic Thickeners- (Carbomers, PolyethyleneGlycol)• Ionic Thickeners- (Salt)
  5. 5. Carbomer’s• A family of Cross-Linked Acid Polymers• They are essential ingredients in Cosmetics and Pharmaceuticals• They are Excellent Rheology Modifiers
  6. 6. Carbopol Polymers• They are High Mol.Wt Polyacrylic acids, Cross-Linked with polyalkenylether• They provide Thickening with a wide range of flow properties
  7. 7. ThickeningMechanism
  8. 8. Hair Styling Gel FormulationIngredient Weight % FunctionDeionized Water 61.2 DiluentPVP 2.5 Hair Settling ResinAminomethyl Propanol 0.30 Neutralizing AgentCARBOPOL 0.5 Rheology ModifierWheat Protein 0.5 ConditionerMethyl Paraben 0.5 PreservativeEthanol 34.5 Solvent
  9. 9. Hydroxy Ethyl Cellulose• It is derived from cellulose• It is a non-ionic water soluble Polymer• It can – 1) Thicken 2) Bind 3) Emulsify 4) Form Films 5) Retains Water
  10. 10. Salient Features Of H.E.C• Provides a smooth and silky feel to product• It has high ionic tolerance• It gives an extremely high clarity in gels• It offers good compatibility with surfactants• Wide range of viscosities can be achived withHEC
  11. 11. • A purified cellulose is treated with NaOH to form aswollen alkali cellulose• This swollen alkali cellulose is treated withethylene oxide to get a long chains of hydroxy ethylcellulose
  12. 12. Physical Properties
  13. 13. Problems with HEC• CLOUDINESS tends to appear in clear solution ina short span of time• It gives a sticky feeling on the hand over a periodof time.• It consists of 5% of volitile matter which is notaccepted worldwide.
  14. 14. Toothpaste Formulation With HECIngredienta % weightGelling agent (HEC) 1Humectant(Glycerine) 10-30Abrasive(CaCO3) 15-40Sweetner(Saccharin) 0.1-0.2Flavour 1-1.5Surface active agent 1-2Presevative ,colour & Water qs
  15. 15. References-• Harrys cosmeticology• Noveon website• ISP Product handbook• Lubrizol website
  16. 16. Thank you