active4th Wave · 2021s
Retinal
레티날
RETINALDEHYDE
anti agingacnetexture
One step closer to retinoic acid than retinol — approximately 11x more potent per molecule. Faster results with better tolerance than retinol for many users. Anua, Needly, and Beauty of Joseon popularized retinal in K-Beauty formulations in the 4th Wave. Still requires sun protection; may cause initial purge.