From the manufacturer's website:
Retaine MGD is the only ophthalmic emulsion to deliver complete dry eye relief utilizing Novasorb technology with electrostatic attraction to restore the three layers of the tear film without blurring.
- Replenishes lipid layer and reduces tear evaporation
 - Adds moisture to aqueous layer
 - Lubricates and protects mucin layer
 - Positively charged Retain MGD nano-droplets
 - Negatively charged ocular surface
 - Preservative-free
 - Relieves irritation
 - Long-lasting comfort
 - 30 Sterile single-dose containers, 0.01 OZ (0.4mL) each
 - Product of France
 
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.