Sodium carbomer, 10 grams

Sodium Carbomer

Sodium carbomer is a versatile rheology modifier widely used in the cosmetic industry. It is a synthetic polymer known for its ability to significantly increase the viscosity of aqueous formulations. This property makes it an essential ingredient in various cosmetic products, contributing to their desired texture and stability. 

Understanding Sodium Carbomer

• Chemical Structure: Sodium carbomer is a high molecular weight polymer composed of long chains of acrylic acid units.
• Appearance: Typically, it appears as a white to off-white powder or granules.
• Solubility: While insoluble in water, it readily disperses in aqueous media to form a viscous gel.
• pH Sensitivity: Sodium carbomer exhibits pH-dependent rheological behavior. In alkaline conditions, it swells and forms a highly viscous gel. In acidic conditions, the viscosity decreases.

Applications in Cosmetics

Sodium carbomer finds widespread application in a variety of cosmetic formulations due to its unique properties:

• Skin Care:
  • Lotions and Creams: It acts as a thickening agent, providing a smooth and creamy texture to lotions and creams.
  • Gels: It forms the base for various gels, such as aloe vera gel, providing a clear and refreshing texture.
  • Emulsions: It stabilizes emulsions, preventing phase separation and ensuring a uniform consistency.
  • Sunscreens: It enhances the stability and spreadability of sunscreen formulations.
• Hair Care:
  • Shampoos and Conditioners: It improves the viscosity and consistency of shampoos and conditioners, providing a luxurious lather.
  • Hair Styling Gels: It forms the base for hair styling gels, providing strong hold and control.
  • Hair Sprays: It can be used to increase the viscosity and hold of hair sprays.
• Color Cosmetics:
  • Lipsticks: It improves the texture and stability of lipsticks, providing a smooth and even application.
  • Mascara: It enhances the viscosity and film-forming properties of mascara, providing better definition and hold.
  • Eye Shadows: It can be used to improve the texture and adherence of eye shadows.

Usage Guidelines

• Typical Usage Levels: The typical usage level of sodium carbomer in cosmetic formulations ranges from 0.5% to 10%, depending on the desired viscosity and the specific product.
• Incorporation: To ensure proper dispersion, sodium carbomer should be slowly added to the aqueous phase of the formulation under gentle stirring. It is often necessary to neutralize the formulation to a slightly alkaline pH (around 7) to achieve maximum viscosity.
• Compatibility: Sodium carbomer is generally compatible with most other cosmetic ingredients. However, it may interact with certain surfactants and electrolytes, so careful formulation considerations are necessary.

Cosmetic Recipe: Simple Moisturizing Gel

Ingredients:

• Aloe Vera Gel: 90%
• Sodium Carbomer: 0.5%
• Triethanolamine (TEA): 0.5% (to neutralize)
• Essential Oil (optional): 5 drops (e.g., lavender, tea tree)

Instructions:

1. In a clean container, add the aloe vera gel.
2. Slowly add the sodium carbomer to the aloe vera gel while stirring continuously to avoid lump formation.
3. Add the triethanolamine dropwise to the mixture, stirring constantly until the desired viscosity is achieved.
4. If using essential oils, add them to the mixture and stir gently.
5. Transfer the gel to a clean jar or bottle.

Recommendations for Use:

• Apply a small amount of gel to clean skin and gently massage.
• Use as a daily moisturizer or as needed.
• Store in a cool, dry place away from direct sunlight.

Note: This is a basic recipe and can be customized by adding other ingredients such as humectants (hyaluronic acid, glycerin), antioxidants (vitamin E), or botanical extracts.

Disclaimer: This information is for educational purposes only and should not be considered professional advice. Always conduct thorough testing and safety assessments before incorporating any new ingredient into a cosmetic formulation.

This information is provided for general knowledge and informational purposes only. It does not constitute professional advice. For any specific questions or concerns, consult with a qualified professional.