Butylated Hydroxyanisole
AKA “BHA, 6-di-tert-butyl-4-methoxyphenol, butylated methoxyphenol
Synthetic
Ingredient Facts
Butylated hydroxyanisole
AKA: BHA, 6-di-tert-butyl-4-methoxyphenol, Butylated methoxyphenol
Synthetic · Antioxidant · EWG: 4
Synthetic
Antioxidant
Preservative
Anti-Aging
Barrier Support
Synthetic
Not Clean
Helps preserve product freshness and effectiveness by protecting against oxidation, keeping formulas stable over time.
Formula
C11H16O2
Mol. Weight
180.24
CAS #
25013-16-5
Form
Powder
See origin →
Functions
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Preservative
Keeps your product from growing bacteria, mold, or yeast. Without these, that jar of cream becomes a petri dish in about a week.
Anti-Aging
Targets fine lines, wrinkles, or loss of firmness. Works by boosting collagen, speeding cell turnover, or both.
Skin Protecting
Helps rebuild and strengthen your skin barrier — the invisible shield that keeps moisture in and irritants out. Essential after over-exfoliating or harsh weather.
Locks In Moisture
Fights Bacteria
Traditional Use
Synthetic antioxidant developed in the early 20th century for cosmetic preservation. Designed to prevent oxidation and rancidity in cosmetic formulations containing oils and fats.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
No
EWG
4
CIR
Safe w/Qualifications
Pregnancy
No
CIR Safety Findings
medical-approval
all-shades-safe
Mild Irritant
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR