Quaternium-90
What is Quaternium-90?
Quaternium-90 is a synthetic quaternary ammonium salt, a type of cationic surfactant characterized by a positively charged nitrogen atom linked to long alkyl chains. Primarily featured in hair care cosmetics like conditioners, detanglers, and styling products, it functions by adsorbing onto the negatively charged hair keratin surface. This electrostatic bonding neutralizes static buildup from friction during brushing or environmental humidity, promoting smoother comb-through and reduced flyaways. Additionally, its lubricious properties enhance hair slip, facilitating even distribution of product and improving overall texture without weighing hair down. Formulators value its compatibility in both rinse-off and leave-on systems, where it supports stable emulsions and aids active ingredient deposition. Derived through chemical synthesis from fatty alcohols and amines, it exemplifies modern conditioning technology tailored for everyday hair maintenance.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Minimizes static electricity for less flyaway hair.
Boosts surface smoothness and combability.
Supports better product spreadability in hair formulas.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Individuals with fine or static-prone hair. | Those with known sensitivity to quaternary ammonium compounds. |
| Users seeking improved detangling in conditioners. | Individuals experiencing contact dermatitis from similar cations. |
| People in humid climates needing flyaway control. | Users preferring silicone-free or minimalist hair products. |
Safety Notes
- Rated low hazard by environmental working group assessments.
- Determined safe for use in cosmetics by expert review panels.
Frequently Asked Questions about Quaternium-90
What does Quaternium-90 do in hair products?
It acts as an antistatic agent, reducing static and improving hair smoothness and ease of styling.
Is Quaternium-90 safe for daily use?
Yes, it carries a low hazard rating and is approved safe in cosmetics when used as directed.
Does it clog pores?
It has a comedogenic rating of zero, making it unlikely to contribute to pore blockage.