Bertholletia Excelsa Extract Bueno Extractos vegetales Envejecimiento Bertholletia Excelsa Extract at a glance From the Brazil nut tree Contains antioxidant compounds Might also stimulate collagen production Bertholletia Excelsa Extract description _Bertholletia excelsa_ extract comes from a plant more commonly known as the Brazil nut. Extracts from this plant can come from its bark, seeds, or stems. While there isn’t a great depth of research at this point on Brazil nut extracts uses in cosmetics, what we do know about it is promising. As with most other plant-derived extracts, it contains skin-beneficial antioxidant compounds, particularly polyphenols. One study found that the stem-bark extract from _Bertholletia excelsa_ stimulates collagen production, making it a valuable ally in the fight against visible signs of aging. _Bertholletia excelsa_ extract is most often prepared for cosmetics in a base of water and glycerin. In this form, use levels of the extract range from 0.25–2.5%, with clinical studies showing impressive benefits beginning at a 1% use level. Related ingredients: Brazil Nut Extract