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POTASSIUM PERSULPHATE
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Potassium Persulfate is a powerful oxidizing agent commonly used in various industrial applications such as hair bleaching, textile processing, and as an initiator in polymerization reactions.
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General Description:
Potassium persulfate (K2S2O8) is an inorganic compound consisting of potassium cations and persulfate anions. It is a white, crystalline salt that is highly soluble in water. Potassium persulfate is primarily known for its oxidizing properties and is widely used in various industrial applications, including cosmetics.
Uses in the Cosmetic Industry:
- Potassium persulfate has limited direct uses in the cosmetic industry due to its strong oxidizing nature, which can be harsh on skin and hair. However, it can be indirectly involved in the production or formulation of cosmetic products in the following ways:
- Hair Bleaching: Potassium persulfate is used in hair bleaching products to lighten hair color. It helps to break down the natural pigments in hair, allowing for dyeing or lightening processes.
- Nail Products: In the nail care industry, potassium persulfate may be used in formulations for acrylic nails or other nail treatments where oxidation or polymerization reactions are required.
Hazard:
Potassium persulfate is considered hazardous in cosmetic applications due to the following reasons:
- Skin and Eye Irritation: Direct contact with potassium persulfate can cause severe irritation to the skin and eyes. It is corrosive and can lead to burns or allergic reactions upon prolonged exposure.
- Respiratory Hazard: Inhalation of potassium persulfate dust or aerosols can irritate the respiratory tract and cause respiratory distress in sensitive individuals.
- Sensitization: Prolonged or repeated exposure to potassium persulfate may lead to sensitization, where individuals develop allergic reactions upon subsequent exposures.
- Environmental Impact: Potassium persulfate is harmful to aquatic life and may cause long-term adverse effects in aquatic environments if not properly managed during disposal.
- Regulatory Restrictions: Due to its hazardous nature, the use of potassium persulfate in cosmetics is strictly regulated by authorities such as the FDA in the United States and the European Commission. Maximum allowable concentrations and usage conditions are specified to ensure consumer safety.
CAS Number : 7727-21-1
INCI: Potassium Persulphate
Composition: Potassium Persulphate is composed of potassium ions (K+) and Persulphate ions (S2O8^2-).
Purity Grade: No purity grade applicable
Appearance: Potassium Persulphate typically appears as a white, crystalline powder or granules.
Solubility: Potassium Persulphate is highly soluble in water, forming a clear, colorless solution. It is sparingly soluble in organic solvents.
Preservation : Potassium Persulphate should be stored in a cool, dry place away from heat and incompatible substances. It should be kept in airtight containers to prevent moisture absorption.
Storage: Store in a closed container at a dry place at room
temperature
Country of Origin: India
Raw Material Source : Potassium Persulphate is primarily synthesized through the oxidation of potassium sulfate.
Manufacture: Potassium Persulphate is manufactured through the electrolysis of a solution containing potassium sulfate and sulfuric acid. The resulting Persulphate ions are then isolated and processed to obtain Potassium Persulphate.
Animal Testing: Not animal tested
GMO: GMO-free (does not contain plant-derived components)
Vegan: Does not contain animal-derived components
Proposition: POTASSIUM PERSULPHATE complies with relevant regulations and
guidelines
Warning : Avoid contact with eyes. In case of contact, rinse thoroughly with water. Use appropriate protective equipment when handling. Keep out of reach of children.
THE STORY OF POTASSIUM PERSULPHATE
Potassium Persulphate: The Powerful Oxidizing Agent for Hair Lightening & Color Activation
Potassium Persulphate is a strong inorganic oxidizing agent widely used in hair bleaching, hair coloring, and polymerization processes.
In cosmetics, it plays a crucial role in lifting natural hair pigments, activating color molecules, and enabling high-performance hair lightening systems.
Commonly used in powder bleach, highlighting products, and professional salon formulations.
Produced via Electrochemical Oxidation of Potassium Sulphate Solutions
Potassium Persulphate is manufactured through electrolysis of concentrated potassium sulphate solutions.
This process results in the formation of peroxydisulphate ions (S₂O₈²⁻), which provide its strong oxidizing power.
After electrolysis, the product undergoes:
• Crystallization
• Filtration
• Drying
• Quality control testing
TRCkem supplies high-purity Potassium Persulphate suitable for cosmetic and industrial use.
Oxidize. Activate. Lighten.
Potassium Persulphate delivers key formulation benefits:
✅ Acts as a primary oxidizing agent in hair bleach
✅ Breaks down natural melanin pigments
✅ Enhances color lift efficiency
✅ Improves consistency in professional hair lightening
✓ Used in polymerization and specialty chemical reactions
Applications include: hair bleaching powders, highlighting creams, polymer initiators, textile processing, and specialty cleaning formulations.
High-Activity Chemical — Requires Professional Handling & Strict Safety Measures
• Typical cosmetic use: 5–60% in bleaching powder systems
• Always used with hydrogen peroxide developers
• Strong oxidizer → avoid contact with combustible materials
• Can cause skin/respiratory irritation — PPE mandatory
• Not suitable for leave-on skincare
• Store in cool, dry, well-ventilated areas
• Avoid contamination with organic materials
• Follow MSDS and regulatory guidelines strictly
Formulator’s Queries, We Answered
1. What is Potassium Persulfate? What is its CAS number and INCI name?
CAS Number: 7727-21-1
INCI Name: Potassium Persulfate
Chemical Identity: The chemical formula is K₂S₂O₈ (also referred to as dipotassium peroxodisulfate).
2. What is the primary function of Potassium Persulfate in cosmetics / personal care?
It acts as a strong oxidizing agent.
It is commonly used in hair-bleaching and hair-lightening formulations, to help decolorize natural hair pigment so that hair can be lightened or dyed.
In addition to hair applications, it can be used in nail-care (e.g. in some nail products), or in polymerization/oxidation-related processes relevant to cosmetic raw-material manufacture
3. Is Potassium Persulfate safe for use in cosmetics? Under what conditions?
According to a safety assessment by the expert panel reviewing persulfates in cosmetics, Potassium Persulfate (along with other persulfates) is considered safe when used as oxidizing agents in hair colorants and hair-lighteners, for brief/discontinuous use followed by thorough rinsing (i.e. rinse-off products) — but data are insufficient to conclude safety for leave-on products or dentifrices.
4. What are the hazards and risks associated with Potassium Persulfate?
Skin and eye irritation / corrosion: Direct contact may cause irritation or burns.
Respiratory sensitization / irritation: Inhalation of dust or aerosol may provoke respiratory issues, especially for sensitized individuals.
Allergic sensitization: Repeated or prolonged exposure may lead to sensitization (i.e. allergic reactions) upon subsequent use
5. In what types of cosmetic / personal-care products is Potassium Persulfate typically used?
Hair bleaches / hair lighteners / hair colorants — most common application.
Nail care / nail-treatment products — for polymerization or hardening processes (e.g. acrylic nails) in some nail systems.
Raw-material processing / polymerization in cosmetic ingredient supply chain — e.g. as oxidizing agent or initiator during synthesis of polymers, resins, acrylates, etc. that may be used in various beauty formulations.