Hydrogenated Polyisobutene
AKA “DTXCID6043098, UCUGLVJQUIRCPK-UHFFFAOYSA-N
Emollient
Ingredient Facts
Hydrogenated polyisobutene
AKA: DTXCID6043098, UCUGLVJQUIRCPK-UHFFFAOYSA-N
Emollient · Emollient · EWG: 1
Synthetic
Emollient
Skin Conditioner
Clean
Propene, 2-methyl-, homopolymer
CAS #
40921-86-6, 61693-08-1
Form
Powder
See origin →
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Viscosity Controlling
Locks In Moisture
Traditional Use
A synthetic polymer developed in the 20th century for the cosmetics industry. Created to provide long-lasting moisturization and improved texture without the rancidity problems associated with natural oils.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Final report of the cosmetic ingredient review expert panel on the safety assessment of Polyisobutene and Hydrogenated Polyisobutene as used in cosmet
International journal of toxicology, 2008
Final report of the cosmetic ingredient review expert panel on the safety assessment of Polyisobutene and Hydrogenated Polyisobutene as used in cosmet
International journal of toxicology, 2008
Final Report of the Cosmetic Ingredient Review Expert Panel on the on the safety assessment of Polyisobutene and Hydrogenated Polyisobutene as used in cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Hydrogenated Polyisobutene
European Commission
EU Cosmetic Ingredient Database (CosIng)
Skin moisturization by hydrogenated polyisobutene--quantitative and visual evaluation.
Dayan N, Sivalenka R, Chase J
Journal of cosmetic science, 2009
Hydrogenated Polyisobutene
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Jun 2026
Data: CosIng · EWG · CIR