Sepiplus 400 by Sepic

Sepiplus 400 by Seppic is a high-performance multifunctional polymer used in cosmetic formulations for its exceptional thickening, stabilizing, and emulsifying capabilities. Known for its smooth sensory finish and excellent compatibility with active ingredients, Sepiplus 400 is widely chosen among formulators looking for thickening agents for skincare that work well across a wide pH range. Sourced from India and boasting 99% purity, this polymer is ideal for both beginners and professional formulators aiming to create lightweight gels, serums, and emulsions.

INCI Name: Polyacrylate-13, Polyisobutene, Polysorbate 20

Molecular Formula: Blend of polymers – no single molecular formula

Alternate Names: Seppic Sepiplus 400, Sepiplus® 400, Pre-neutralized emulsifying polymer

Purity of the Ingredient: 99%

Country of Origin: India

Sepiplus 400 Benefits & Uses in Skincare

• Functions as a thickening agent for skincare products
  
• Allows cold-process formulation—no heating required
  
• Stabilizes emulsions and suspensions
  
• Provides a silky, non-sticky finish
  
• Suitable for gels, creams, lotions, and makeup products
  
• Compatible with high concentrations of alcohol and active ingredients

How Sepiplus 400 Works in Formulations

• Thickens both water-based and oil-in-water emulsions
  
• Acts as a co-emulsifier, reducing the need for additional stabilizers
  
• Pre-neutralized polymer allows easy dispersion in water
  
• Helps suspend particles or actives evenly throughout the formula
  
• Enhances skin feel and spreadability

pH and Ideal Temperature Range for Best Use

• pH Range: 5.0 – 9.0
• Ideal Temperature: Room temperature; stable up to 80°C, though cold-processing is preferred

How to Use Sepiplus 400 in DIY Skincare

• Use at 0.2% – 2.5% concentration, depending on the desired thickness
  
• Disperse slowly in water while mixing to avoid clumping
  
• Works well in cold-process DIY gels, moisturizers, and haircare products
• Add during the water phase of formulation
  
• Explore videos and tutorials to learn how to use Sepiplus 400 in formulations correctly

Why Sepiplus 400 Is a Go-To Thickening Agent for Skincare

If you’re searching for thickening agents for skincare that deliver texture, stability, and ease of use, Sepiplus 400 is a top-tier solution. It simplifies formulation processes while enhancing the final product’s feel and performance. Whether you’re making a hydrating gel or a complex emulsion, understanding how to use Sepiplus 400 in formulations can dramatically improve your results.