Snapshot
- Overview
- A film-forming ingredient that adds shine and hold to nail products.
- Category
- Tone/Texture
- Type
- Film Former
Polystyrene
Polystyrene is a synthetic polymer used as a film former in cosmetics and personal care. It creates a thin, flexible coating that adds shine, improves wear resistance, and gives structure to styling and nail formulas.
Like this ingredient?
Our take
Is Polystyrene a Good Ingredient?
Fair rating because it mainly provides film-forming shine and wear with limited skincare benefits, and it may feel occlusive or contribute to buildup for some users. Those prone to congestion may notice increased heaviness or makeup residue if not thoroughly removed.
What it does
Skin Benefits
Gives a polished, high-gloss look and can help color cosmetics stay in place. Primarily a cosmetic finish booster; skincare benefits are limited and evidence is modest.
Where you'll find it
Uses in Skincare & Cosmetics
Seen in nail topcoats, mascaras, and long-wear lip products to create a cohesive film, and in certain hair gels for hold and shine in styling formats.
Before you use it
Safety
Generally inert on skin and low in irritation potential. Can feel occlusive in heavier films and may trap debris if cleansing is insufficient; remove thoroughly to minimize breakouts. No common cosmetic concentration restrictions noted.
Products with Polystyrene
