Its a 10 hour flight. So I’d probably watch a couple of films and read a bit. I’d want to sleep as you’re gaining time, 8 hours behind, so if you’re leaving he UK at 8am, you’re landing at 10am. So if you’re wanting to last to a reasonable time in the evening you’re going to want a sleep, I’m just rubbish at sleeping on a plane, sitting up.
For a 24+ hour flights to Australia I’ve taken face wipes, a moisturiser, deodorant, toothbrush and lip balm. To the US I’d probably make do with a lip balm and deodorant and worry about anything else when at the hotel.
But no. I don’t think I’ve ever seen anyone sitting in a sheet mask and cucumber on their eyes like some would have you believe. And certainly wouldn’t use anything that sprays at my seat or is overly fragranced so as not to bother anyone nearby.
I remember Fleur saying she’d painted her nails an a flight and there was uproar in the comments.