IngredientsOrder for applying adenosine — where should it go in your skincare steps?
Adenosine is not an ingredient that works only at a specific step; rather, it is one for which the time it stays on the skin while dissolved in a formulation matters. To put the conclusion first, for adenosine, 'what formulation it is contained in and how stably it is applied' matters more than 'which numbered step it is.' In reality, it is included across various formulations such as toners, essences, and creams, so following each product's usage instructions matters more than the order itself. That said, within the general skincare flow (formulations with more moisture → formulations with higher viscosity), adenosine-containing creams are generally placed at the last or second-to-last step.