Polyquaternium-16

Among cationic polymers, Polyquaternium-16 stands out for its wide pH tolerance and its ability to condition and hold at the same time. It is built from vinylpyrrolidone and quaternized vinylimidazole, and the supplier specification lists everything from shampoos and conditioners to sprays, gels and fixing products.

Product data

Water-soluble cationic polymer. PH range 3.0 to 8.0. Typical applications: shampoos, conditioners, leave-in care products, hair sprays, styling gels, hair mousses, professional salon styling products and hair fixing products. For Polyquaternium-16, the supplied concentration and recommended level are confirmed on the supplier CoA for each lot.

Conditioning and hold

Different grades of Polyquaternium-16 vary in charge density. Higher charge gives stronger conditioning and detangling; lower charge gives more film and hold. Check the grade information on the CoA and choose the format accordingly.

Product formats

Conditioning shampoo

A two-in-one style cleanser that detangles.

Leave-in spray

A light spray for easy combing.

Styling gel

A clear gel with soft hold.

Fixing spray

A finishing spray for salon styles.

Conditioner

A rinse-off product with added slip.

Formulating guidance

Add the polymer to the water phase. Its wide pH range suits acidic conditioners and leave-ins around pH 4. In clear gels, use nonionic thickeners. Pair it with Polyquaternium-11 for stronger hold, D-Panthenol for moisture and IO Conditioning Honey Derivative for extra conditioning. Ingredients that pair well with Polyquaternium-16 are collected under actives.

Claims

Use cosmetic wording such as easier combing, soft, smooth hair and flexible hold. Support with combing-force tests and panel assessments.

Who the products are for

Customers with tangle-prone or long hair, parents looking for detangling products for children and salon professionals.

Shampoo compatibility

Cationic polymers can interact with anionic surfactants. In shampoos, this interaction is used to deposit conditioning on dilution. Test clarity and viscosity, and check deposition by feel on wet hair.

Build-up

Repeated use of cationic polymers can lead to build-up on fine hair. Suggest a clarifying shampoo once a week in the routine.

Testing

Run stability at room temperature and 40 °C, checking clarity, viscosity and pH.

Packaging

Pump sprays for leave-ins, bottles for shampoos, tubes for gels.

Batch quality

Keep the CoA for each lot and store retained samples.

Range planning

A conditioning shampoo, a leave-in spray and a gel form a detangling and styling line.

Children's care

A gentle detangling spray with this polymer and mild preservatives suits family ranges.

Original recipe: detangling leave-in spray, 100 g

Purified water 91.20 g, Polyquaternium-16 2.00 g as an example level per CoA, glycerin 2.00 g, propanediol 2.00 g, panthenol 1.00 g, PEG-40 hydrogenated castor oil 0.50 g, fragrance 0.20 g, preservative 0.80 g, lactic acid solution 0.30 g. Premix fragrance with the solubilizer, add to water with the remaining ingredients and stir until clear. Adjust pH to about 4.5.

Styling detail

In gels and fixing sprays, the polymer contributes soft, flexible hold while keeping hair touchable. For stronger hold, combine it with a film-former such as Polyquaternium-11 or a PVP-based resin. Test hold on tresses in humid conditions and brush them out afterwards to check for flaking.

Acidic conditioners

Its tolerance down to pH 3.0 lets it sit in acidic rinses and shine-focused conditioners, which help lay the cuticle flat.

Salon channel

Salons use fixing sprays daily, so larger refill sizes suit this channel well.

Storage

Keep the container closed in a cool place.