Not recommended for people who wear makeup.
Effects aren't 'instant', but it dramatically shortens the life span of my pimples.<br/>Including the hormonal acne I get on my jawline. Pimples that I know would otherwise hang around for 6 months to a year are gone or reduced within a few days.<br/>I've even used it on ones that would turn into cystic acne (against the instructions - only supposed to be used on *pimples*, nothing else). With reasonable success.<br/>Have also used it on whiteheads - manufacturer advises NOT doing this. In my experience it's drawn out the stuff and made it easier to pop. ***People who scar should NOT try this.<br/>Have repurchased. Next time will try to get a plug-in version.