Rhonda Allison’s ChronoPeptide A offers 24 hour pro-youth benefits that perform beyond expectation, promoting firmer, brighter-looking skin, more toned skin and powerful rejuvenation. Using a new chrono-peptide, this potent retinal serum mimics sun exposure activation, triggering the circadian genes to optimize physiological activities. ChronoPeptideA also uses retinaldehyde, a stable, less irritating precursor to retinoic acid, to bring about impressive benefits, making it great for all skin types – including photo-aged, blemish-prone and sensitive skin.