Kevin.Murphy Shimmer.Shine Repairing Shine Mist
Even if space is limited in your holiday packing (we curse you, Ryanair), this is worth finding a corner for. It's a non-oily spray featuring fruit extracts from the Australian rainforest, together with immortelle (the 'everlasting' age-defying essential oil, and that hot-hot-hot botanical baobab. (Don't ask us how it's non-oily with that lot in: it just is.)
Excitingly, for us, it features light-reflective particles which add lustre to hair, while repairing. So it's fab for vacation evenings, when the last rays of sunset should set your 'do' a-glimmer.
But the real reason it earns a space in that baggage, for us, is that it can be spritzed onto skin, too, gilding golden arms, legs and shoulders subtly but gorgeously. It also smells really lovely (Kevin is nuts about smells): lightly ambery/woody, and softly oriental.
And with the bottle just 100 ml in size, you should just squeak through security with this in that annoying little plastic bag they still insist on...