What it is: An overnight intensive serum that strengthens hair while you sleep, in limited-edition packaging in honor of Earth Month. The artwork created by Láolú Senbanjo symbolizes Aveda's mission of care for people and planet.Who it's for: All hair types and textures.What it does: Specially designed for overnight effectiveness, this serum builds bonds, repairs all three layers of hair and reduces the appearance of split ends by 84%. The lightweight formula creates an invisible veil over each strand to minimize friction and help prevent damage while you sleep. Plant-powered technologies nourish, soften and smooth to recover the essentials of healthy hair lost by daily assaults. It absorbs quickly into the cortex and strengthens hair from the inside out, so you can wake up to stronger, healthier-looking hair after just one night.Key ingredients:- Bond-building plant molecule: builds new hydrogen bonds deep in hair's cortex to strengthen and reinforce hair's integrity at the core- Nourishing macro green blend: replenishes the essentials of healthy hair with certified organic avocado, green tea and sacha inchi oils; smoothes the cuticle to detangle and helps prevent breakage- Plant-based complex: creates an invisible botanical outer layer to protect hair from future damage- Nangai oil: helps bring split ends together, instantly reducing their appearance in just one nightHow to use: Apply to lengths and ends at bedtime; do not rinse. Sleep on it. In the morning, style as usual.Pro tip: Apply during the day to your ends for instant split-end repair. Before you go to bed, use generously; don't be frightened to use too much. Section hair into four sections. Emulsify product in hands and work a generous amount into each section. Then comb through with a paddle brush. 3.4 oz. Leaping Bunny-certified for a commitment to cruelty-free testing Vegan Made in the USA