Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate

Good
Safe
Pores
0/5
Irritancy
0/5
FA Safe
❌ No
Pregnancy
✅ Safe
Vegan
✅ Yes

Science & Benefits

This long-named ingredient is a 'stabilizing' antioxidant. Unlike Vitamin C, which is used for its skin benefits, this molecule is used specifically to prevent the oxidative degradation of other ingredients in the formula when exposed to light or air. By ensuring the chemical integrity of the product, it prevents 'spoiled' ingredients from becoming skin irritants. It is a large, inert molecule that physically cannot interact with or clog the hair follicle. It is a critical 'silent worker' that maintains formula safety and efficacy in medical-grade or clinical skincare products intended for long-term shelf stability.

Safety Alerts

🍄

Fungal Acne: This ingredient is a lipid/ester that can feed Malassezia yeast. Avoid if you have active FA bumps.