What are thickeners in cosmetics?
Cosmetics. Thickening agents used in cosmetics or personal hygiene products include viscous liquids such as polyethylene glycol, synthetic polymers such as carbomer (a trade name for polyacrylic acid) and vegetable gums.
Which thickener is commonly used in skin moisturizing?
Lipid Thickeners They are used most often in creams and lotions. Some common types include Cetyl Alcohol, Stearyl Alcohol, Carnauba Wax, and Stearic acid.
Is lotion Pseudoplastic fluid?
According to the ana – lysis of a down-curve at lower shear rates (0–600 s-1) it was con- firmed that samples of body lotions are pseudoplastic sub- stances and the pow- er law model, t = Kg·p, was used (regression coefficients higher than 0.98) to deter- mine consistency parameter, K, and flow index, p.
What are viscosity modifiers in cosmetics?
Viscosity modifiers change the thickness of a formulation and as a result can change the ease of flow. Viscosity modifiers are used in a wide range of products from concrete, dry mortar and lubricants to pharmaceuticals, cleaning and cosmetic products.
Is hyaluronic acid a thickener?
For this reason, HA can be used to thicken some formulations, which can definitely be useful! You can use a plain ol’ 1% HA solution as a serum on its own, or you can incorporate hydrosols and other water soluble ingredients like panthenol and herbal extracts to create a beautiful hydrating toner.
What ingredient is used to thicken creams?
Cornstarch. Cornstarch is the most common thickening agent used in the industry.
Are creams pseudoplastic?
Following the researches conducted we could conclude that both traditional creams and the instant ones are semi fluid food products with pseudoplastic and thixotropic shear flow behavior, with structural viscosity.
Is xanthan gum a rheology modifier?
Structuring formulations in acidic conditions has been a difficult industry challenge as the standard rheology modifier, xanthan gum, does not function well at low pH.
Is glycerin a thickening agent?
In foods and beverages, glycerol serves as a humectant, solvent, and artificial sweetener. It is also used as filler in commercially prepared low-fat foods, and as a thickening agent in liqueurs.
Is Carbomer a thickener?
Carbomers are used as thickeners, emulsion stabilizers, gel formers, and suspending agents.
Which additive is used as thickener?
Cornstarch. Cornstarch is the most common thickening agent used in the industry. It is mixed with water or juice and boiled to make fillings and to give a glossy semi-clear finish to products.
What are examples of pseudoplastic fluids?
In contrast to a Bingham fluid, a pseudoplastic fluid is a fluid that increases viscosity as force is applied. A typical example is a suspension of cornstarch in water with a concentration of one to one. This cornstarch behaves like water when no force is applied; however, it is solidified as force is applied.
What is a pseudoplastic cream?
A pseudoplastic material is one in which viscosity decreases with increasing rate of shear (also termed shear thinning). This property is found in certain complex solutions, such as ketchup, whipped cream, blood, paint, and nail polish.
What is a pseudoplastic fluid?
What is gel spreadability?
Spreadability of gels, creams, ointments and lotions is the net result of a combination of rheological contributions, of which viscosity is just one.
Is xanthan gum a Pseudoplastic?
Xanthan gums are soluble in cold water and are highly pseudoplastic (when shear stress is increased, viscosity is reduced). Xanthan gum viscosity has excellent stability over a wide pH and temperature range and it is also resistant to enzymatic degradation.
What is xanthan gum in cosmetics?
Xanthan gum is a natural product which is non-toxic and non-irritating. It can be used in combination with other thickeners and stabilizers to improve texture, flow behavior, stability and appearance. All these properties make xanthan gum a very effective thickening and stabilizing agent for cosmetics and toiletries.
What are thickeners and stabilizers in cosmetics?
Thickeners & Stabilizers. Thickeners are added to enhance the the stability and the overall performance of the cosmetic product. While some thickeners act as emulsifiers, majority of them function like moisturizers. As thickeners are derived from varied sources, they can be completely natural like waxes and also synthetic or semi-synthetic.
What is the role of thickening agent in cosmetic industry?
Role Of Thickening Agent in Cosmetic 3. Principles involved in Thickening • Stokes’s law – is the basis of the falling-sphere viscometer, in which the fluid is stationary in a vertical glass tube. A sphere descends through the liquid. it reaches terminal velocity, which can be measured by the time it takes to pass two marks on the tube.
What is synthetic thickener used for?
The final group is the synthetic thickeners. They are often used in lotion and cream products. The most common synthetic thickener is carbomer, an acrylic acid polymer that is water-swellable and can be used to form clear gels.
What are the benefits of natural thickeners for cosmetics?
Natural thickeners boast additional benefits and can impact product stability, efficacy, and sensory attributes of the formula. Natural thickeners for cosmetics, like waxes and gums, are an important part of cosmetic formulations to enhance the consistency, viscosity and feel.