The main ingredients of Hylo Dual® are 2% ectoin + 0.05% sodium hyaluronate. Ectoin is an amino acid derivative and a natural cell protector and optimizer. Ectoin molecules attract water molecules around them, which not only locks in water, but also builds a water molecule shield that wraps the cells in the intercellular space because of its hydration effect. It can build a "water armor" on the ocular surface, play an anti-inflammatory and anti-allergic role, and protect the ocular surface. In addition, under the action of ectoin, the triglyceride layer in the lipid layer is converted into an elastic lipid film, which can effectively stabilize the lipid layer of the tear film. The sodium hyaluronate in Hylo Dual® is a high molecular weight sodium hyaluronate, which has stronger water retention performance and better anti-inflammatory and repair-promoting effects than low molecular weight sodium hyaluronate. The dual formula of Hylo Dual® plays a multi-effect role in one bottle, helping contact lens wearers protect a clear vision.