Iodopropynyl butylcarbamate (Ipbc)
AKA “Iodopropynyl butylcarbamate, 3-Iodo-2-propynyl butylcarbamate, Ipbc, Woodlife, Troysan KK-108A”
Synthetic
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Ingredient Facts
Iodopropynyl butylcarbamate (Ipbc)
AKA: 3-Iodo-2-propynyl butylcarbamate, Woodlife, Troysan KK-108A
Synthetic · Preservative | Antimicrobial · EWG: 4
Plant-Derived
Preservative
Synthetic
Clean
A preservative that keeps the formula fresh and prevents bacteria and mold growth, so your product stays effective from first use to last.
Formula
C8H12INO2
Mol. Weight
281.09
CAS #
55406-53-6
Form
Powder
Plant-Derived
Synthetic
Function
Preservative | Antimicrobial
Benefits
Preserves Formula
Antioxidant Protection
Reduces Inflammation
Locks In Moisture
Prevents microbial growth
Traditional Use
A synthetic preservative created in the latter half of the 20th century as an alternative antimicrobial agent for cosmetic formulations. Designed to provide broader microbial protection than earlier generation preservatives.
Skin Types
all-skin-types
Best For
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Caution
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe, Phototoxicity Concern
Concentration Guide
0.02%
0%0%
Reg. Limit
EU regulatory limit: 0.02%. a) 0.02% b) 0.01% c) 0.0075%. a) Not to be used for children under three years of age (11) b) and c) Not to be used for children under three years of age (12) Source: EU Cosmetics Regulation (EC) 1223/2009, Annex V (Preservatives), Entry 56.
Regulatory Agencies
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR