Laneige Water Bank Blue Hyaluronic Serum

The Laneige Water Bank Blue Hyaluronic Serum launched in November 2022 as the centrepiece of the brand's relaunched Water Bank line. It features Blue Hyaluronic Acid, a proprietary active created by fermenting hyaluronic acid with deep sea algae through a 10-step microfiltration process. This fermentation enhances penetration depth compared to conventional hyaluronic acid, allowing moisture to reach lower skin layers. Supporting humectants Trehalose and Betaine extend the hydrating effect throughout the day, while an added peptide blend provides mild firming support. The texture is an ultra-lightweight watery essence that absorbs within seconds and leaves a silky, non-tacky finish. The formula is dermatologist-tested and hypoallergenic, free from added synthetic fragrance and alcohol, making it a low-risk daily option for combination and sensitive skin types. The 2022 relaunch removed several potentially sensitising ingredients present in the previous Water Bank formula. At $45 for 50ml, this serum sits at the mid-range sweet spot for a Sephora bestseller with a proven hydration focus. It layers cleanly under any moisturizer or SPF and dries down fast enough for users who prefer a quick morning routine. It suits glass skin seekers who want a single workhorse hydration product without brightening or exfoliating actives.