Due to some family function, I had to apply henna on my hands 4 days back. I had my biometrics taken today (I have applied for UK visa). The staff, while taking my biometrics, told me that henna could create an issue at the time of immigration. Is that true? Because I haven't heard of such issues before.
And since I decided to proceed with my biometrics, what is the best I can do? Could there be a problem for me at immigration?