In reply to Fraser:
Cheers, glad you found them useful.
Yep, you're right. Bleaching out of climber's hands and arms is quite common - especially amongst us pasty-skinned Brits, covered in chalk. There's not a whole heap you can do about it sometimes - a tan is usually the best solution. Just try and under-expose a bit - in Photoshop it's easier to bring out shadows then it is to rescue highlights.
I think Jacky did have a tan though. But I suspect the person who I bribed to hold the reflector onto her was using the silver side, not the gold one. A gold relector gives a much warmer look and cures this problem.