I have been using face theory regenacalm 2% retinol serum with no results since late November. Upon doing further research it turned out the form of retinol they are using (retinol esters) amount to something silly like 0.1% or 0.01% of actual retinol, can't remember which as I couldn't save the chat.
I really want to get started on some actual retinol that will start making a difference to my skin - I am late 20s/early 30s .
Could I get some recommendations of actual retinol products that I could start with that are more than 0.01% of retinol? 
The amount of information out there is overwhelming and I'd hate to be spending £££s on products that don't contain what they say it does.