research Increasing the percutaneous absorption and follicular penetration of retinal by topical application of proretinal nanoparticles 14 citations , March 2019 in “European journal of pharmaceutics and biopharmaceutics” Proretinal nanoparticles improve skin absorption and reduce irritation of topical retinoids.
research Efficacy and safety evaluations of topical proretinal nanoparticles January 2018 Proretinal nanoparticles are a safe and effective way to deliver retinal to the skin.