Q: How long does instant tan last?
A: Until you wash it off. Instant tan sits on the surface of the skin rather than developing in it, so it is designed for a night out and comes away in the shower.
Q: Does instant tan wash off?
A: Yes, completely, with warm water and a wash. That is the point of it, and it is what makes it forgiving if you are new to tanning products.
Q: How do you apply instant tan without streaks?
A: Exfoliate first, moisturise dry areas like elbows, knees and ankles, then apply with a mitt in long sweeping strokes rather than circles. Build gradually rather than going heavy in one pass.