Polyquaternium-7 (PQ-7)

• INCI: Polyquaternium-7 (in Aqua)
• CAS: 26590-05-6
• Type: Cationic conditioning copolymer (acrylamide / DADMAC)
• Form: Clear to colourless viscous liquid
• Odour: Slight
• Active solids: Approximately 8–10%
• pH (as supplied): 3.3–4.5
• Solubility: Water soluble
• Typical use rate: 1–5% as supplied
• Compatibility: Good compatibility and clarity in anionic surfactant systems
• Storage: Keep from freezing. Stir well before use. Store tightly closed in a cool place.

• Improves wet combing and detangling without a heavy, waxy feel
• Adds softness, slip, and shine to dry hair
• Helps reduce static and flyaways
• Boosts rich, creamy foam in shampoos, body washes, and facial cleansers
• Leaves skin feeling smoother and less tight after washing
• Works well in 2-in-1 shampoos and clear surfactant systems
• Easy to formulate — add to the water phase, no heat required
• Useful in hair care, bath & shower, shaving, and skin care products

Polyquaternium-7 is a cosmetic raw material intended for external use in finished formulations. Not classified as hazardous according to Safe Work Australia.

• General Use: For manufacturing of cosmetic products only. Not a finished leave-on product in its concentrated supplied form.
• Skin Contact: Wash with soap and water if irritation occurs.
• Eyes: Rinse thoroughly with water. Remove contact lenses if easy to do.
• Allergies: Discontinue use of finished products if irritation develops.
• Children: Keep raw material out of reach of children.
• First Aid: Rinse skin or eyes with water; seek advice if irritation persists. Not for consumption.
• Handling: Stir well before use. Avoid freezing. Spilled liquid can be slippery.

What is Polyquaternium-7 used for?

It is a cationic conditioning polymer used in shampoos, conditioners, body washes, facial cleansers, and some skin care products to add slip, softness, foam quality, and easier combing.

What usage rate should I start with?

Start at 1% as supplied in shampoos and body washes. Use 1–5% as supplied depending on how much conditioning you want. Higher levels give more slip, but can feel coated if overused.

Do I add it to the oil phase or water phase?

Add it to the water phase. It is water soluble and does not need to be melted.

Will it make my shampoo cloudy?

Polyquaternium-7 is commonly chosen because it has good compatibility and clarity in anionic surfactant systems compared with some other cationic conditioners.

Can I use it in soap or shampoo bars?

It is designed for water-based formulas. It can be used in liquid shampoos, conditioners, and washes. It is not a substitute for BTMS or other solid conditioners in anhydrous bars.

Does it need a preservative in my formula?

Yes. This is a water-containing ingredient. Any finished water-based product you make with it still needs a suitable preservative system.