PPG-12/Smdi Copolymer

What is PPG-12/Smdi Copolymer?

PPG-12/SMDI Copolymer is a synthetic polymer derived from reacting polypropylene glycol (a chain of 12 propylene oxide units) with saturated methylene diphenyl diisocyanate, creating a polyurethane structure. Primarily used in hair styling products like sprays, gels, and mousses, it functions by depositing a thin, elastic film on hair fibers. This film enhances style retention, resists humidity, and reduces frizz while maintaining flexibility to avoid brittleness. In skin care and makeup, it contributes to water-resistant barriers and smoother application. As a conditioning agent, it minimizes friction between strands or on skin surfaces, improving manageability and texture without heavy residue. Its emollient-like action supports product spreadability in formulations.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1 View on EWG →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Film former
Creates a continuous film on skin or hair to improve wear, water resistance, transfer resistance, shine, or hold in sunscreens, makeup, and styling products.
Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.
Hair fixative
Provides style hold by forming a film on hair, helping maintain shape, reduce frizz, and improve durability in sprays, gels, and mousses.
Plasticizer
Improves flexibility and reduces brittleness of films (e.g., nail coatings, hair sprays), helping prevent cracking and enhancing smooth application.
Emollient
Softens and smooths skin by filling in surface roughness and improving slip; can also help reduce moisture loss when paired with occlusives and film formers.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.
Hair fixing
Improves style retention by depositing film-forming polymers that hold hair in place while balancing stiffness, flexibility, and humidity resistance.

Benefits

Delivers flexible hold in hair products to combat humidity and frizz.

Enhances hair and skin smoothness by reducing friction and static.

Supports long-wear performance in makeup and sunscreens via protective films.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
People styling hair in humid environments for lasting hold.
Those with rare sensitivities to polyurethane components.
Individuals with coarse or unmanageable hair seeking better conditioning.
People preferring silicone- and polymer-free formulations.
Users of transfer-resistant makeup needing improved wear.
Individuals avoiding synthetic film-formers in hair products.

Safety Notes

  • Considered low hazard in cosmetic use with no comedogenic potential.
  • Typically non-sensitizing based on formulation assessments.

Frequently Asked Questions about PPG-12/Smdi Copolymer

What does PPG-12/SMDI Copolymer do in hair products?

It forms flexible films for style hold, frizz control, and humidity resistance.

Is it safe for skin?

Yes, it acts as a conditioning agent with low irritation potential.

Does it clog pores?

No, it has zero comedogenic rating.