In the world of skincare, haircare, and personal care, one multifunctional ingredient quietly powers product performance—Acrylates Copolymer.

     1.What is Acrylates Copolymer?

     Acrylates Copolymer is a synthetic copolymer using methacrylic acid and ethyl acrylate as comonomers. In cosmetics and personal care products, certain grades act as alkali-swelling rheology modifiers—polymers that swell in neutral to alkaline conditions to build viscosity, stabilize particles, and create a uniform appearance.

     In its raw form, it usually appears as milky white liquid. Once hydrated and neutralized, it forms a gel-like network in water-based formulations, offering:

•  Thickening to achieve the desired viscosity
• Suspension to keep solid or decorative elements evenly dispersed
• Clarity to maintain a transparent or translucent appearance

      While some acrylates copolymers are also known for film-forming, our Repoly 100、300 and 300H are optimized for suspension and thickening performance—making it ideal for clear cleansing products and visual-effect formulations.

2.Key benefits for formulators

• Efficient Thickening
   Builds viscosity in a controlled manner for stable, consumer-preferred textures.
• Superior Suspension
   Holds beads, petals, scrubbing particles, or actives in place without settling.
• Crystal Clarity
   Maintains transparency in neutral to alkaline pH formulations.
• Formulation Stability
   Prevents separation, even in challenging systems such as soap-based products.

• pH Flexibility
   Performs effectively in different pH ranges, depending on the grade selected.

     3.Repoly 100、Repoly 300、Repoly 300H: Tailored Suspension & Thickening Solutions

     At Reachin, we specialize in acrylates copolymer rheology modifiers designed to meet the needs of modern, visually appealing personal care products.  

Repoly 100 – For pH 6.5–7.5

• Function: Alkali-swelling thickener & suspending agent
• Highlight: Excellent transparency in pH 6.5–7.5
• Applications: Clear skincare gels,  lightweight cleansers, and facial washes

Repoly 300 – For pH 6.5–7.0

• Function: Alkali-swelling thickener & suspending agent
• Highlight: Exceptional clarity in pH 6.5–7.0
• Applications: Transparent body washes, shampoos, and shower gels

Repoly 300H – For High Viscosity, pH 7.0–10.5

• Function: Alkali-swelling thickener & suspending agent
• Highlight: Transparent stability in soap-based and high-viscosity formulas

• Applications: Premium cleansing gels with suspended decorative elements, pearlized soap systems

     4.F&Q: Thickening & Suspension with Acrylates Copolymer

     Q1: What makes acrylates copolymer ideal for suspension?

Its alkali-swelling mechanism forms a gel network that traps solid particles and keeps them evenly dispersed throughout the product.

     Q2: Is acrylates copolymer safe for skincare?
Yes. The Cosmetics Ingredient Review Expert Panel has confirmed its safety when formulated to avoid irritation.

     Q3: Can I use Repoly polymers in sulfate-free or soap-based systems?
Yes. Repoly 300H performs exceptionally well in high-viscosity, soap-based formulations, maintaining both stability and clarity.

     Q4: Which Repoly grade should I choose?

• Repoly 100: pH 6.5–7.5, clear gels and facial cleansers
• Repoly 300: pH 6.5–7.0, transparent body washes and shampoos

• Repoly 300H: pH 7.0–10.5, high-viscosity soap-based products

With the star products Repoly 100、300、300H, formulators can achieve the perfect balance of viscosity, clarity, and suspension—creating products that are as stable and functional as they are visually stunning.