Bought this brand together with Systane Hydration and I use them interchangeably. I normally use Hydration in the morning and use this Balance before sleep. It is an emulsion that is white in colour, and it actually can penetrate to the lipid layer of our eyes, which distinguish it from other eye drops, as others are normally water-based and cannot penetrate to the lipid layer. Since it is an emulsion, eyes will become blur upon dropping, but it is normal, just wait for a few minutes. It really helps with dry eyes issue, providing lasting relief.