Refresh Optive (30 PF vials)

About Refresh Optive   Practical Highlights Active ingredients: Carboxymethylcellulose, glycerin Preservative-free Box of 30 0.01 fl oz/ 0.4mL vials Rebecca's Thoughts When Optive first came out, it was Allergan's first drop using glycerin - but in conjunction with carboxymethycellulose which is a common polymer for artificial tears. It's a nice balance of a drop - not so watery-feeling that you feel drier five minutes later, but not so goopy that you can't see clearly for ten minutes either. It proved quite popular and has developed into a strong brand-within-a-brand. They now have two spin-offs of it - "Advanced", which has just slightly more glycerin and also adds polysorbate 80, and now "MEGA-3" which is the same as Advanced plus castor oil and flaxseed oil. Updated 1/19/26