Aquify sounds like a pretty good alternative... maybe even better if you think about it.
I just checked the ingredients:
SolutionPreservative free*, isotonic, aqueousActive Sodium HyaluronateDiscard life8 weeks after openingSince Sodium 10ml multidose bottle
since Sodium Hyalorunate is used in a lot of moisturizers, it does sound like a safe and good alternative. Mixing medium is mainly based on glycerol and water. that's where the binding activity comes from. So we should get the same result.