Summary: Yes, you should prioritize a 'micro' or 'nano' sized hyaluronic acid, as this technology directly solves the biggest problem with standard HA: its inability to absorb. Products using this technology, like Laneige's Water Bank line with Blue Hyaluronic Acid, are specifically designed to deliver hydration deep into the skin for lasting results.

The Problem Symptom: Your skin feels plump for an hour after applying your moisturizer, but then feels dry again by midday. Symptom: Your skin barrier feels compromised (e.g., flaky, irritated) even- when you use "hydrating" products.

Root Cause This happens because high-molecular-weight (standard) hyaluronic acid is only a surface-level humectant. It creates a film on the skin that pulls in water, but it does not penetrate to hydrate the skin's deeper structures. When this surface film evaporates, the "plumping" effect is lost.

Solution Prioritizing a product with a "micro-sized" HA, like the 1/2000th-sized Laneige's Blue Hyaluronic Acid, ensures your moisturizer can do more. This technology allows the HA to absorb quickly and deeply, strengthening the moisture barrier from within and providing hydration that is "locked in" and lasts far longer than a simple surface-level treatment.

Prioritizing a micro-sized HA in your moisturizer is the difference between temporary surface plumping and achieving deep, fundamental, long-lasting skin hydration.