Anthocyanins

Anthocyanins are water-soluble pigments responsible for the deep reds, purples and blues found in many plants—particularly berries, grapes and dark vegetables. In skincare, they serve as a cosmetic colorant while also functioning as antioxidants that help neutralise free radicals generated by environmental stressors like UV radiation and pollution.

These compounds work at a cellular level, supporting the skin's natural defence mechanisms rather than providing surface-level benefits alone. Their presence in formulations reflects both functional and aesthetic purposes.

Anthocyanins function as antioxidants by donating electrons to unstable free radicals, stabilising them and preventing cellular damage. In laboratory studies, they have been shown to activate Nrf2, a protein that acts as a master regulator of the skin's antioxidant defence system. When activated, Nrf2 triggers production of protective enzymes that reinforce the cell's natural resilience against UV stress and oxidative damage.

The mechanism appears to involve stabilising this protective pathway at the genetic level, though the extent to which topical application translates these laboratory findings to living skin remains an area of ongoing research.

Anthocyanin-containing products work best as part of a consistent routine rather than as a standalone solution. Use them alongside proven UV protection (sunscreen) and other antioxidant ingredients if you wish to build a comprehensive defence strategy against environmental damage. Since these pigments can impart colour to formulations, patch test first if you have sensitive skin or are using them around the eye area.