The Ordinary Retinol 1% in Squalane 30mlThe Ordinary Retinol 1% in Squalane 30ml Retinol 1% in Squalane is The Ordinary's maximum strength retinol the final and most potent step in the three concentration progression (0. 2% 0. 5% 1%). This serum is designed for experienced retinol users who have fully acclimatised to lower concentrations and are ready for the highest level of cell turnover acceleration and collagen stimulation that The Ordinary offers. It is not recommended as an entry