Polyquaternium-7 Application in Shampoo

2025-12-30 - Leave me a message

In the quest for perfect hair, we often come across glamorous ingredient names, yet one humble but crucial star ingredient—Polyquaternium-7 (also known as Poly(diallyldimethylammonium chloride-co-acrylamide), DADMAC-Acrylamide Copolymer, or Polyquat-7)—is playing a important role in gentle conditioning within shampoo formulations. Today, let’s delve into the world of this unique polymer and understand how premium products like ShengQing's SQ-QUAT 7P(Polyquaternium-7) leverage its scientific principles to redefine the daily hair care experience.

What is Polyquaternium-7? An "Intelligent" Conditioning Polymer

Polyquaternium-7, chemically known as the Copolymer of Diallyldimethylammonium Chloride and Acrylamide, is a cationic polymer formed by copolymerizing diallyldimethylammonium chloride (DADMAC) with acrylamide (AAm). Its molecular structure carries a positive charge, while damaged hair fiber surfaces are typically negatively charged. This acts like a "magnet"—opposites attract—allowing the polymer to precisely and firmly adhere to the hair surface, forming an even, breathable protective film. Unlike some strong cationic conditioners, the adsorption of Polyquaternium-7 is moderate and gentle, avoiding excessive buildup and thus preventing issues like heaviness or limp hair.


Its many aliases—PDADMAC-co-AAm, Polyquaternium-7—all point to the same core: a technological ingredient that achieves efficient, gentle conditioning through charge interaction. This is precisely the characteristic modern shampoo formulations, especially those aiming for a "one-step" cleansing and conditioning experience, dream of.


Polyquaternium-7: A Conditioning Solution Born from Science, Perfected for Experience

Building on a deep understanding of the chemical mechanisms of Polyquaternium-7, ShengQing Company has developed SQ-QUAT 7P, specifically designed for high-end hair care formulations. It is not just a standard copolymer but an optimized and strictly quality-controlled quaternized multipolymer.

Its core advantages lie in:

Excellent Skin & Hair Affinity

SQ-QUAT 7P exhibits high affinity to the keratin of hair and skin. This means it can more intelligently identify and adhere to damaged areas needing repair, rather than simply coating the entire hair shaft. Upon application, it imparts a lubricious and moist feeling to the hair, as if dressing each strand in a lightweight, breathable moisturizing layer, enhancing hair quality from the inside out.

Unrivaled Compatibility

In complex shampoo systems, the "harmonious coexistence" of ingredients is key to formulation success. SQ-QUAT 7P possesses good water-solubility and is highly compatible with anionic, cationic, nonionic, and amphoteric surfactants. This offers formulation engineers great flexibility, allowing it to be easily incorporated into any system (whether clear or pearlescent emulsion) without worrying about stability or efficacy loss, ensuring a stable texture and excellent performance in the final product.

Comprehensive Hair Care Benefits:

Improves Dry & Wet Combability:* Significantly enhances the ease of combing through hair in both dry and wet states, reducing breakage caused by tugging on tangles.

Imparts Softness and Gloss:* The uniform film formed on the hair shaft effectively smoothens the cuticle, increasing light reflection, thereby enhancing hair emollience, smoothness, and gloss.

Excellent Curl Retention:* For permed hair, SQ-QUAT 7P helps maintain curly hairstyles excellently. Its lightweight nature won't weigh curls down but provides just the right amount of support and hold.

Why is Using Polyquaternium-7 (SQ-QUAT 7P) in Shampoos a Smart Choice?

Integrating SQ-QUAT 7P into shampoo formulations means bringing professional conditioning care forward to the very first step of cleansing.

Aligning with Modern Consumer Trends:

 Consumers increasingly seek efficient and convenient care routines. There is strong market demand for "2-in-1" or shampoos with excellent conditioning functions. SQ-QUAT 7P enables a single product to effectively cleanse the scalp while instantly improving hair quality, meeting the needs of a fast-paced lifestyle.

Achieving Gentle Conditioning: 

Compared to some traditional conditioners, its moderate cationic strength and molecular weight design ensure gentleness. It is less prone to excessive buildup, leaves no residue feeling after rinsing, and is particularly suitable for those seeking a refreshing experience or with fine hair, avoiding the awkwardness of hair feeling "heavier with each wash."

Enhancing Formulation Performance: 

For brands, incorporating efficient ingredients like Polyquaternium-7 can significantly enhance the product's sensory experience (touch, gloss) and actual efficacy, serving as a powerful technological selling point that differentiates the product from market competitors.

As consumers deepen their understanding of product ingredients and pursue the ultimate in "gentle yet effective" care, the importance of ingredients like Polyquaternium-7—based on clear scientific principles and balancing efficacy with mildness—will become even more prominent. ShengQing Company continues to invest in R&D, ensuring that products like SQ-QUAT 7P not only meet current formulation needs but also, with their stable quality and outstanding performance, help brand partners create the next generation of market-leading star shampoo products.


Conclusion

Polyquaternium-7 and its premium representative, SQ-QUAT 7P, are far more than obscure chemical names on an ingredient list. They are the intelligent bridge connecting cleansing and care, the scientific key imparting instant silkiness and long-term health to hair. Choosing products equipped with such advanced conditioning technology means opting for a smarter, gentler, and more efficient way to begin hair care.




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