longer wear. Polymethylsilsesquioxane

LON

9/10

Concern level

High concern

A silicone-based polymer resin used mainly as a texturizing, soft-focus, and opacifying powder in cosmetics. It improves slip, blurs the look of fine lines and pores, and can help formulas feel smoother, less greasy, and more elegant on skin.

Pore-clogging

Non-comedogenic

Pregnancy

Safe

Regulatory

No data

Benefits

Improves TextureMinimizes Pores

Concerns

Silicone

Chemical Properties

Typical Concentration

1.00% - 20.00%

CAS Number: 68554-70-1

Skin Type Compatibility

dry skin7/10

oily skin9/10

sensitive skin8/10

acne prone9/10

mature skin9/10

normal skin9/10

Interactions

incompatible with: No major ingredient-specific incompatibilities are well established; powder-rich formulas may pill with very high silicone/elastomer or high-pigment loads.

Risks & Warnings

Generally low-risk in finished cosmetics. Main concerns are rare physical irritation from airborne powder in loose-powder/spray formats and occasional dryness or pilling in very high-load formulas. Not known as a common allergen or comedogen.

Vegan Cruelty-Free