Artificial tan is fine after using our IPL.But for sun tanning you should always wait 48 hours to tan after using your handset. If you have recently been sun tanning, we recommend waiting 2-4 days before using your handset.The same applies for sun beds. We advise removing all artificial tan before using our handsets, as the light energy may be more attracted to the pigments in the skin, rather than the melanin in the hair.You can reapply the artificial tan after your session once the skin has relaxed.