Skincare Ingredient
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Sodium Cocoyl Isethionate
In Skincare: Is Sodium Cocoyl Isethionate Safe? Comedogenic Rating & Side Effects
Safety Information
Quick Insights
At a glance
- 01
Sodium cocoyl isethionate, a cleansing agent derived from coconut oil, is considered suitable for use in formulations intended for sensitive skin.
- 02
This ingredient helps to minimize potential damage to the skin's protective barrier.
- 03
Sodium cocoyl isethionate generates a mild, foamy lather when used in cleansing products.
- 04
The Cosmetic Ingredient Review (CIR) Expert Panel has assessed sodium cocoyl isethionate as safe for use in cosmetics.
Overview
Ingredient Profile
Data & Research
Scientific Facts
Common Uses
Formulation in Sodium Cocoyl Isethionate
Role of Sodium Cocoyl Isethionate
Active Cosmetic Mechanisms
CLEANSING
Dirt & Oil RemoverRemoves dirt, oil, makeup, and impurities
SCIENTIFIC ANALYSIS
// Evidence: Cleansing ingredients remove sebum, dirt, cells, and cosmetics through surfactant action, emulsification, or solubilization. Surfactants reduce surface and interfacial tension, allowing water to wet oily surfaces. Micelle formation enables hydrophobic substances to be solubilized and rinsed away. Must balance efficacy with mildness to avoid stripping natural lipid barrier.
HAIR CONDITIONING
Hair SoftenerImproves hair manageability, softness, and appearance
SCIENTIFIC ANALYSIS
// Evidence: Hair conditioning ingredients smooth the cuticle, reduce frizz, and add shine through cationic surfactants (behentrimonium chloride), silicones (dimethicone, amodimethicone), natural oils, and proteins. These deposit on negatively charged damaged sites, neutralizing charge, filling surface irregularities, and providing lubrication. Mechanism involves electrostatic attraction, film formation, and surface smoothing.
SURFACTANT - CLEANSING
Cleansing SurfactantRemoves dirt and oil through surfactant action
SCIENTIFIC ANALYSIS
// Evidence: Cleansing surfactants specifically formulated for removing sebum, dirt, and impurities. Primarily anionic (sodium laureth sulfate, sodium cocoyl isethionate) and amphoteric surfactants (betaines). Mechanism involves reducing surface tension enabling water to wet oily surfaces, solubilizing lipophilic materials in micelles, and emulsifying oils for rinse-off. Cleansing efficacy balanced with mildness by surfactant selection, concentration, and pH optimization. Must avoid excessive lipid removal that compromises barrier function.
Products
containing Sodium Cocoyl Isethionate
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References
Scientific sources
European Review for Medical and Pharmacological Sciences, Volume 24, 2020, pages 11,432–11,439
International Journal of Toxicology, May 2017, pages 5S-16S
International Journal of Cosmetic Science, August 2008, page 310
Therapeutics for the Clinician, May 2005, pages 317-324
Journal of Cosmetic Science, December 2003, pages 559-568
Similar Ingredients
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Frequently Asked Questions
Sodium Cocoyl Isethionate — common questions
What is Sodium Cocoyl Isethionate in skincare?
Sodium Cocoyl Isethionate is a surfactant derived from coconut oil. It’s used in cosmetic formulations, particularly in cleansing products like bath soaps and shampoos, as well as hair tonics and skin cleansers.
What does Sodium Cocoyl Isethionate do? / Functions of Sodium Cocoyl Isethionate?
Common functions: CLEANSING, HAIR CONDITIONING, SURFACTANT - CLEANSING.
What is the comedogenic rating of Sodium Cocoyl Isethionate? / Is Sodium Cocoyl Isethionate comedogenic?
Sodium Cocoyl Isethionate has a comedogenic rating of 1 out of 5. A rating of 1 means it is unlikely to clog pores.
Does it clog pores?
Sodium Cocoyl Isethionate is unlikely to clog pores (rating 1/5).
Is Sodium Cocoyl Isethionate safe for skin?
Sodium Cocoyl Isethionate has a safety rating of 2 out of 5. A rating of 2 means it is generally considered safe for most skin types. Note: May cause mild irritation or dryness in individuals with sensitive skin; limited evidence of comedogenic effects. The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that it is safe as use
Is Sodium Cocoyl Isethionate good for sensitive skin?
Sodium Cocoyl Isethionate has an irritancy rating of 2 out of 5. A rating of 2 means it is generally well-tolerated.
What are the side effects of Sodium Cocoyl Isethionate in skincare?
Known considerations: May cause mild irritation or dryness in individuals with sensitive skin; limited evidence of comedogenic effects. The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that it is safe as used in rinse-off products, though safety in leave-on products requires further evaluation.