Air brush tanning is a spray on tan done by a professional. It can last from 7 to 10 days.
Risks:
Most sunless tanning products do not contain sunscreen therefore doesn't provide any protection against ultraviolet rays.
Sunless tanning is a safe way to look tanned without exposing yourself to the damaging effects of the sun.
DHA has been approved for use within the beauty industry for the past 30 years. No adverse skin reactions have been reported other than minor skin irritations on sensitive skin, but we would recommend a patch test 24 hrs before your spray tan if you know your skin is sensitive.
For more information on why spray tanning is the healthiest tanning method, please visit:
http://www.mayoclinic.com/health/sunless-tanning/SN00037