Olaplex Instant Hydration 4-Piece Gift Set is a luxurious haircare collection designed to deeply hydrate, strengthen, and restore all hair types. Featuring four essential Olaplex favourites—No.4 Shampoo, No.5 Conditioner, No.5 Leave-In Conditioner, and No.0.5 Hair Treatment—this set delivers a complete routine for nourished, smooth, and healthy-looking hair. Formulated with Olaplex’s patented bond-building technology, each product works to repair and protect hair from damage caused by styling, colouring, and environmental stressors. The set begins with No.4 Shampoo, which gently cleanses while restoring moisture and shine. No.5 Conditioner replenishes hydration, detangles, and softens the hair without weighing it down. The No.5 Leave-In Conditioner provides all-day nourishment and heat protection, leaving hair silky and manageable. The No.0 Hair Treatment primes and strengthens hair, amplifying the effects of the full Olaplex routine for maximum repair and resilience. Together, these products create a transformative, salon-quality haircare experience at home.