Collodion

AKA: Cellulose nitrate solution, Pyroxylin

Synthetic

Occlusive

Not Clean

OriginProduced from cellulose, a naturally occurring polymer, combined with nitric acid through chemical modification. Synthesized by nitration of cellulose fibers to create cellulose nitrate, a thermoplastic compound.

Flexible Colloidon is a mixture of Collodion, camphor and castor oil

CAS #

8050-70-2

Form

Powder

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Caution

Functions

Film Forming

Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.

Strengthens Barrier

Fights Acne

Creates protective layer

The paper trail

🔬Peer-reviewed1 paper →

⚖️Regulatory0 listings

🛡️Safety-assessed1 review →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

EWG

CIR

Safe as used

Pregnancy

Caution

Concentration Guide

Leave-on14%

Rinse-offNot reported

0%50%100%

CIR reported use · report published 2016

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Verified Jun 2026

Data: CosIng · EWG · CIR