Skincare Ingredient
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Microcrystalline Wax
In Skincare: Is Microcrystalline Wax Safe? Comedogenic Rating & Side Effects
Quick Insights
At a glance
- 01
Microcrystalline wax is a petroleum-derived ingredient characterized by its crystalline structure.
- 02
Its gummy texture contributes to versatility in cosmetic formulations.
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This ingredient assists in binding oils and solvents within a product.
- 04
Microcrystalline wax is considered safe for use in cosmetics, including lip products.
Key Benefits
What Microcrystalline Wax does for your skin
Overview
Ingredient Profile
Role of Microcrystalline Wax
Active Cosmetic Mechanisms
BINDING
Ingredient BinderHolds ingredients together in solid products
SCIENTIFIC ANALYSIS
// Evidence: Binding agents provide cohesion and structural integrity in compressed or formed solid products. These include hydrophilic binders (gums, cellulose derivatives, PVP) that swell and create adhesive films, lipophilic binders (waxes, oils) that melt and solidify to cement particles, or polymeric binders. The mechanism involves particle-particle adhesion through van der Waals forces, hydrogen bonding, or mechanical interlocking.
BULKING
Volume BuilderAdds volume and body without adding weight
SCIENTIFIC ANALYSIS
// Evidence: Bulking agents increase product volume while maintaining low density. These include low-density powders (hollow microspheres, perlite, expanded polymers), aerogels, and materials with high specific volume. Mechanism involves entrapping air within particle structures or creating open, porous networks. In hair products, bulking agents coat individual strands, increasing diameter and creating space between hairs.
EMULSION STABILISING
Emulsion StabilizerPrevents oil and water mixtures from separating
SCIENTIFIC ANALYSIS
// Evidence: Emulsion stabilizers maintain dispersion of immiscible phases by preventing droplet coalescence through interfacial film formation, electrostatic repulsion, steric stabilization, viscosity enhancement, or network formation. Stabilizers include polymers (carbomers, xanthan gum), proteins, and modified celluloses. The combination of primary emulsifiers with secondary stabilizers creates robust lamellar liquid crystalline structures.
VISCOSITY CONTROLLING
Thickness RegulatorAdjusts product thickness and flow properties
SCIENTIFIC ANALYSIS
// Evidence: Viscosity controlling ingredients modify product flow characteristics through thickening or thinning. Thickeners include natural gums (xanthan, guar), synthetic polymers (carbomers, acrylates), and inorganic thickeners (silica, clays). Mechanism varies: polymer chain entanglement, hydrogen bonding networks, particle association, or swelling. Rheology modifiers create desired texture, prevent separation, control application properties, and affect sensory perception. Can produce Newtonian (constant viscosity) or non-Newtonian (shear-thinning, thixotropic) flow behavior.
Products
containing Microcrystalline Wax
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References
Scientific sources
OCL, April 2022, pages 1–16
International Journal of Cosmetic Science, April 2020, pages 146–155
Journal of The European Academy of Dermatology and Venereology, October 2019, pages 5–14
Bundesinstitut Risikobewertung, February 2018, pages 1–27
Toxicology Letters, October 2017, pages 70–78
International Journal of Cosmetic Science, 2011, pages 263–268
Similar Ingredients
Ingredients with similar chemical profiles and skincare properties.
Frequently Asked Questions
Microcrystalline Wax — common questions
What is Microcrystalline Wax in skincare?
Microcrystalline Wax is a wax derived from petroleum and characterized by the fineness of its crystals in contrast to the larger crystals of paraffin wax. It consists of high molecular weight saturated aliphatic hydrocarbons.
What does Microcrystalline Wax do? / Functions of Microcrystalline Wax?
Common functions: BINDING, BULKING, EMULSION STABILISING, VISCOSITY CONTROLLING.
What is the comedogenic rating of Microcrystalline Wax? / Is Microcrystalline Wax comedogenic?
Microcrystalline Wax has a comedogenic rating of 2 out of 5. A rating of 2 means it is unlikely to clog pores.
Does it clog pores?
Microcrystalline Wax is unlikely to clog pores (rating 2/5).
Is Microcrystalline Wax safe for skin?
Microcrystalline Wax has a safety rating of 2 out of 5. A rating of 2 means it is generally considered safe for most skin types.
Is Microcrystalline Wax good for sensitive skin?
Microcrystalline Wax has an irritancy rating of 1 out of 5. A rating of 1 means it is generally well-tolerated.
What are the side effects of Microcrystalline Wax in skincare?
Microcrystalline Wax is generally well-tolerated.