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Some researchers prefer saline for subcutaneous or intraperitoneal routes in rodent studies

Peter de Keizer's pioneering research at Erasmus University Medical Center to its current status as a leading senolytic research tool, FOXO4-DRI demonstrates how precise molecular targeting can enable selective elimination of harmful cellular populations while preserving healthy tissue function

Apply to damp skin and massage gently over the face

This does not mean topical use is futile, but the fibroblast-activation mechanism proven in vitro requires dermal delivery that standard emulsion vehicles do not reliably achieve