Small amount of Retin A is enough
With Retin A it should be applied to
washed skin, and a single pea sized amount is enough for a full face.
Moisturizer can be applied after the Retin A is applied and rubbed into the
skin until it is fully absorbed. Sometimes you need to start slow with the Retin
A and use it every 2 days for a week, then every 3 days for a week and then try