Shown to reduce the appearance of fatigue by the first morning. Night Reboot Serum is the flagship serum in the Pure Shots range. The formula is enriched with Moonlight Cactus flower extract, which blooms for only 6 hours every year and releases its sugar during this rare occasion. The plant's rare sugar has been captured through a cold and slow extraction process designed for YSL Beauty. Night Reboot Serum's bi-phase (exfoliating-in-oil) formulation combines 3.4% Glycolic Acid with Moonlight Cactus flower extract from Morocco. The bi-phase formula consists of an oil phase that meets an exfoliation phase - a combination that both smooths and refines the feel of skin. The formula helps to encourage the removal of dead skin cells while simultaneously hydrating the skin. Attesting to the serum's efficacy, women perceived the formula's benefits after the very first use including: Skin looks less tired 80% agree Skin looks like you've had a full night's rest 79% agree Skin texture seems refined 86% agree Skin seems softer 89% agree Skin looks smoother 89% agree Skin seems hydrated 89% agree Skin looks healthier 86% agree Complexion looks more radiant 88% agree *Self-assessments 66 women. Not suitable for sensitive skin. Tested under dermatological control.