Common Name(s): Volcanic pumice,lava stone powder

CAS Number: 1332-09-08

DESCRIPTION

What It Does: Provides moderate physical exfoliation for foot care from porous volcanic mineral.

Why It's Used: Standard foot exfoliant from natural volcanic pumice – the porous structure provides moderate abrasion appropriate for thick foot skin without danger to more delicate areas.

How It Works: Porous aluminosilicate glass from rapid volcanic gas cooling provides irregular porous surface for abrasion. mohs hardness 6 provides effective exfoliation of calloused skin. pore structure provides gentle abrasion from multiple small contact points rather than solid edge cutting.

Typically Found In: Foot scrubs,heavy-duty exfoliants,pumice bars

TECHNICAL DETAILS

Primary Category: Functional ingredient – volcanic rock exfoliant

Secondary Functions: Skin conditioning

Application Areas:

Typical Concentration Range: 5%–40%

SOURCING & ETHICS

Vegan Status: Yes – natural volcanic mineral

Halal Status: Yes

Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier.

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Well-tolerated by most skin types.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Too harsh for facial skin. appropriate only for thick calloused skin (feet, elbows). particle size critical – very fine pumice for body; coarse for foot exfoliation.

Works Well With: Standard skincare actives

Avoid Combining With: No known significant incompatibilities

SCIENTIFIC NOTE

Pumice's extraordinary lightness (density 0.3-0.9 g/cm³ vs water 1.0 g/cm³ – it floats on water) arises from its highly porous gas-bubble structure formed when rapidly cooling lava traps volcanic gases. the same pore structure that makes pumice float provides its unique exfoliant character: the pores create multiple small exfoliant contact points that distribute abrasive force over greater area than solid mineral particles of equivalent size, making pumice an effective but relatively controlled exfoliant.

Last Verified: Cosing database,cir safety assessment

Primary Sources: 2026-03-12