Ingredient review
Polyquaternium-22
INCI: Polyquaternium-22
A synthetic conditioning polymer that smooths hair and skin without heavy buildup, but may not suit very fine or low-porosity hair types.
In plain English
Polyquaternium-22 is a positively charged polymer that sticks to the negatively charged surfaces of hair and skin. It forms a thin, flexible film that reduces static electricity, makes hair easier to comb, and leaves skin feeling soft. Think of it as a gentle, non-greasy coating that helps ingredients stay put and improves the overall feel of a product.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Polyquaternium-22 is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Polyquaternium-22.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A synthetic, water-soluble polymer belonging to the polyquaternium family. It is created by combining two monomers (acrylic acid and diallyldimethylammonium chloride) to form a long-chain molecule with a positive charge.
How it works
Its positive charge attracts it to the negative charges on damaged hair and skin. Once deposited, it forms a thin, flexible film that smooths the cuticle, reduces friction, and locks in moisture. This film also helps other conditioning ingredients adhere better.
Pros
Lightweight conditioning
Forms a thin, flexible film that smooths hair without weighing it down, making it ideal for fine or oily hair types.
Static control
Effectively reduces static electricity, especially in dry or winter conditions, leading to less flyaways and easier styling.
Cons and cautions
Potential buildup
On very fine or low-porosity hair, repeated use may cause a dulling film that requires a clarifying shampoo to remove.
Synthetic origin
As a lab-created polymer, it may not appeal to consumers seeking naturally derived or 'clean' ingredient lists.
Best for
- People with dry, damaged, or frizzy hair
- Those seeking a lightweight conditioner for daily use
Use caution if
- People with very fine or low-porosity hair who experience buildup
- Those strictly avoiding all synthetic ingredients
Usage tips
Safety summary
Polyquaternium-22 is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential. No significant safety concerns have been raised by regulatory bodies.
Research notes
Studies confirm its effectiveness as a conditioning and antistatic agent. Safety assessments by the Cosmetic Ingredient Review (CIR) panel have found it safe for use in rinse-off and leave-on products. Research on environmental impact is limited but ongoing.
Common label clues
- Typical concentration
- 0.1% to 2%
- Regulatory status
- Approved for cosmetic use in the EU, US, and most major markets. No known restrictions at typical use levels.
- Common uses
- Conditioners, Shampoos, Leave-in treatments, Styling products, Body washes
- Environmental note
- As a synthetic polymer, it is not biodegradable. However, it is not classified as a microplastic and is generally considered safe for aquatic life at low concentrations.
Good to know
- Polyquaternium-22 is often used alongside silicones to enhance slip and reduce the heavy feel.
- It is compatible with both anionic and cationic surfactants, making it versatile in many formulas.
Common questions
What is Polyquaternium-22 in beauty products?
Polyquaternium-22 is a positively charged polymer that sticks to the negatively charged surfaces of hair and skin. It forms a thin, flexible film that reduces static electricity, makes hair easier to comb, and leaves skin feeling soft. Think of it as a gentle, non-greasy coating that helps ingredients stay put and improves the overall feel of a product.
What does Polyquaternium-22 do in a beauty product?
Its positive charge attracts it to the negative charges on damaged hair and skin. Once deposited, it forms a thin, flexible film that smooths the cuticle, reduces friction, and locks in moisture. This film also helps other conditioning ingredients adhere better.
Is Polyquaternium-22 safe for most people?
Polyquaternium-22 is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential. No significant safety concerns have been raised by regulatory bodies.
Who should be careful with Polyquaternium-22?
People with very fine or low-porosity hair who experience buildup Those strictly avoiding all synthetic ingredients
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.