Is retinaldehyde better than retinol?

Retinaldehyde (retinal) is one conversion step closer to active retinoic acid than retinol, so it can work faster, though it may also be more irritating for some. Picks like MEDITHERAPY's retinal booster and PURITO's dual retinol+retinal serum target shoppers who specifically want that ingredient; just note the supplied data for these was thinner than for the high-volume CeraVe serums.