Methyl Di-T-Butyl Hydroxyhydrocinnamate

Methyl di-t-butyl hydroxyhydrocinnamate is a synthetic antioxidant commonly used in skincare formulations. It belongs to a class of compounds designed to neutralise free radicals—unstable molecules generated by UV exposure, pollution, and natural metabolic processes that can contribute to skin ageing and damage.This ingredient serves a dual purpose in cosmetic products: it acts as an antioxidant to protect the skin and other formula components from oxidative stress, and it also functions as a fragrance component. It is typically used in small concentrations within broader skincare formulati…

This synthetic antioxidant works by donating electrons to free radicals, neutralising them before they can cause oxidative damage to skin cells and collagen. By interrupting the chain reaction of oxidative stress, it helps preserve skin integrity and reduce the visible signs of environmental damage.Additionally, it helps stabilise the skincare formula itself, extending the shelf-life and efficacy of other actives by preventing them from breaking down through oxidation.

This ingredient is incorporated into formulations by manufacturers and requires no special application technique. Use products containing it as directed. If layering multiple antioxidant products, there is generally no need to space them out—they can be used together in your routine. Consistency over time will yield better results than sporadic use.

Generally well-tolerated in cosmetic formulations. Rarely causes sensitisation, though individuals with fragrance sensitivity may wish to check the full ingredient list.