Mannan is a polysaccharide composed of mannose units linked together by glycosidic bonds. This natural polymer is found in various plants, algae, and microorganisms. Mannan is widely used in the cosmetic and personal care industry for its hydrating, skin-conditioning, and texturizing properties.

Chemical Composition and Structure
Mannan is composed of repeating mannose monomers, which are a type of hexose sugar. The specific linkages and structure can vary depending on the source, but common linkages include:

Beta-1,4-Glycosidic Bonds: These bonds create a linear chain of mannose units.
Beta-1,3-Glycosidic Bonds: These bonds can create branched structures in the polysaccharide.
Physical Properties
Mannan typically appears as a white to off-white powder. It is water-soluble, making it suitable for inclusion in various cosmetic formulations. Mannan has a neutral taste and odor, and it can form viscous solutions or gels depending on its concentration and molecular weight.

Cosmetic and Personal Care Applications
Moisturizing: Mannan enhances the skin’s ability to retain moisture, providing long-lasting hydration.

Skin Conditioning: Improves the texture and appearance of the skin, making it softer and smoother.

Film-Forming: Creates a protective barrier on the skin, which helps to lock in moisture and protect against environmental stressors.

Texturizing Agent: Adds viscosity and texture to cosmetic formulations, making them easier to apply and more pleasant to use.

Stabilizing Agent: Helps to stabilize emulsions and prevent the separation of ingredients in cosmetic products.

Environmental and Safety Considerations

Mannan is generally considered safe for use in cosmetic and personal care products when used within recommended concentrations. It is biodegradable and environmentally friendly. The extraction and processing of mannan from natural sources are typically sustainable and have a minimal environmental impact.

Cosmetics - INCI Functions


Film-forming agent. It produces, upon application, a very thin continuous film with an optimal balance of cohesion, adhesion and stickiness on skin, hair or nails to counteract or limit damage from external phenomena such as chemicals, UV rays and pollution.
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CAS: 9036-88-8 51395-96-1