Ive had botox in the forehead 3 weeks ago, can I go under a sunbed?

While there is nothing about Botox that would make the sunbed more of a problem, sunbeds really are bad enough without any help. In terms of wrinkles, Botox makes them better and uv exposure makes them worse. Think of losing a bunch of weight exercising then gaining it all back eating junk food- just doesn't make sense. A brow drop from botox will lessen over time, but you may need a more specific pattern of injection to avoid that next time.

Although the tanning beds should have no effect on your Botox, they have been shown to  increase the risk of skin cancer formation. I would not recommend their use.