If the vine fascinates us with its longevity and resilience, much of its strength comes from the polyphenols it contains. Present throughout the plant—from roots to grapes to shoots—these natural compounds play an essential role in protecting the vine from external stressors and oxidative damage. In skincare, these same polyphenols provide remarkable antioxidant and anti-aging benefits, helping to preserve firmness, radiance, and an even complexion.
Grape polyphenols are the foundation of the vine’s vigor, hardiness, and exceptional longevity. They also give grapes their color and aromatic richness—but their role goes far beyond winemaking. In the world of skincare, certain polyphenols stand out: resveratrol, proanthocyanidins, tannins, and catechin. Together, they help neutralize free radicals—key contributors to premature aging—and provide a comprehensive anti-aging action.
Vine roots are rich in polyphenols called vitisins A and B (viniferin R2 and R1). These molecules have been clinically shown to reduce the appearance of dark spots by inhibiting tyrosinase, the enzyme responsible for melanin production. The result: a more even complexion, visibly brighter skin, and reduced irregularities caused by sun exposure. Discover our Hand and Nail Cream.
In the vine’s winter-pruned branches—the shoots—concentrates one of the most scientifically studied polyphenols: trans-resveratrol. Its antioxidant and anti-aging properties are multiple:
Inside grapes—especially in the seeds and skins—lie powerful polyphenols such as tannins and proanthocyanidins, particularly abundant in red varietals like Syrah, Grenache, or Mourvèdre. These compounds are distinguished by their potent antioxidant effects, which help slow down skin aging. Among them, catechin plays a vital role: it helps protect the skin from harmful UV rays while preserving DNA integrity. By reducing oxidative sun damage, catechin contributes directly to long-lasting anti-aging protection. Discover GSM10®.
At Beau Domaine, these polyphenolic treasures are not used individually but combined into exclusive synergistic complexes—ProGR3® and GSM10®—which are integrated into all of our skincare formulas. This unique blend of polyphenols is designed to provide complete protection for the skin:
Each treatment thus becomes a concentrated source of vine-derived antioxidants, working to reveal skin that is firmer, more radiant, and more resilient against the passage of time. Discover all our treatments.
