Olaplex No. 5 Moisturize & Mend Leave-In Conditioner is a reparative leave-in treatment designed to moisturize, seal split ends, and protect hair from styling damage. This moisture-rich gel-creme formula provides multi-level repair working from cortex to cuticle to continuously mend hair damage and split ends. The product delivers up to 88% split-end sealing after just one use and provides 12x more moisture compared to untreated hair.

Key features include heat protection up to 450°F/232°C, immediate split-end sealing, and continuous damage repair from styling. The formula contains Olaplex's patented Bond Technology which strengthens hair and repairs damage on a molecular level by rebuilding disulfide bonds. The High-Adhesion Sealing Complex works instantly and over time to bind split ends and fill gaps in the hair cuticle. The Hydramino Replenishing Blend includes amino acids, squalane, ximenia oil, panthenol, and glycerin to weightlessly condition, detangle, and add shine without leaving residue.

This product is ideal for dry or dehydrated hair of all types including coily, curly, straight, and wavy textures. The formula is free of sulfates, silicones, phthalates, parabens, and protein, and is color safe, vegan, and suitable for chemically treated hair. The Costco 2-pack includes two 3.3 fl oz bottles with a limit of 5 per member.