4-ISOBUTYLRESORCINOL is graded A (Safe) by Expert·ING, based on COSING regulatory data.
4-ISOBUTYLRESORCINOL
Safety grade: A
4-Isobutylresorcinol is a lab-made compound related to resorcinol, a naturally occurring substance found in plants. It is widely used in skincare as a powerful brightening agent that helps fade dark spots and even out skin tone.
It is used in cosmetic products to protect the skin from oxidative damage while also inhibiting melanin production, helping to reduce hyperpigmentation and create a more even complexion.
Graded using: COSING.
Last verified: May 26, 2026
Other Antioxidant ingredients
- TOCOPHEROL — Grade A
- TOCOPHERYL ACETATE — Grade A
- BHT — Grade C**
- ASCORBYL PALMITATE — Grade A
- HYDROXYACETOPHENONE — Grade A
- PENTAERYTHRITYL TETRA-DI-T-BUTYL HYDROXYHYDROCINNAMATE — Grade A
- ASCORBIC ACID — Grade A
- CAMELLIA SINENSIS LEAF EXTRACT — Grade A