Profhilo or Teosyal Redensity 1 - what is the best one?

Profhilo is made up of higher levels Hyaluronic acid (64mg/2ml). It involves two treatments, 28 days apart.  It is designed to tackle skin laxity and bioremodel collagen and elastin. I have had excellent results with this treatment.
Redensity 1 is composed of Hyaluronic acid plus a Dermo Restructuring Complex (DRC).  The DRC is a cocktail of amino acids, antioxidants, minerals and a vitamin. It will hydrate the skin and prevent premature aging, helping with thinning skin whilst giving a beautiful healthy glow.  It requires 3 treatments, three weeks apart. 
I tend to use Redensity 1 in younger patients and Profhilo in older age groups.  Both are excellent treatments - your doctor will be able to advise which is a better option for you.

Thanks for the question. 
There have been a number of very similar products released in the last couple of years including  Profhilo, Teosyal Redensity 1, Restylane skin boosters and Juvederm Volite. These are all intended for the sort of indications you are describing. There is no good quality evidence proving that one is better than another. The protocols, number of injections, number of treatments etc all vary between the brands. You would be much better off finding an experienced local doctor/injector and discussing all of the options with them.
Good luck!
Dr Chris Macdonald
CRM Aesthetics