Ilex Guayusa Leaf Extract

Ilex guayusa leaf extract is derived from the guayusa plant, a species native to the Amazon rainforest. The extract is rich in polyphenols and caffeine, compounds that contribute to its antioxidant profile.In skincare formulations, this ingredient is typically included for its skin-protecting properties. The antioxidants present may help defend against environmental stressors and free radical damage, which can contribute to premature skin ageing.

The antioxidant action of guayusa leaf extract is attributed mainly to its polyphenol content. These compounds work by donating electrons to free radicals, stabilising them and preventing them from damaging skin cells and collagen.The caffeine present in the extract may also provide mild circulatory benefits, though its role in skincare formulations is primarily secondary to the antioxidant effect.

This ingredient is most effective as part of a layered skincare routine that includes sun protection, which addresses the primary environmental stressor. It works well alongside other antioxidant ingredients such as vitamin C or niacinamide, and can be used daily in serums, moisturisers or treatment products.

Generally well-tolerated in cosmetic formulations. Those with caffeine sensitivity should note the caffeine content, though systemic absorption from topical application is minimal.