Purely Potent Over-Night Repair.?Lightweight treatment that effectively retores skin"s healthy appearance overnight.?Results in smoother, more radiant complexion by morning.?Works with the skin"s natural nocturnal activity when skin is most receptive to repairing itself from daily aggressors to dramatically restore skin.?99.8% naturally-derived and paraben-free.?Kiehl"s Insider Tip: Layer over Powerful-Strength Line-Reducing Concentrate for optimal anti-aging and healthier skin benefits.