I'm no doubt alone in my thinking, but I love products that are either quick and easy to use or multi-task especially when you have only a few minutes to spare to do it...
Two of my favourite quick, no fuss products are from Dior and their 'Glow' line. Nail Glow essentially makes the pinks of your nails pinker and the whites whiter, giving a french nail-esque finish without too much bother at all. It doesn't need a top or base coat, so a quick file (buff, if you have the time to spare) apply a coat and boom. Nicely polished looking nails.
Similarly, Lip Glow (which I've mentioned before, here) adjusts to your own lips 'chemistry' and so gives that 'your lips but better' vibe. Considering how moisturising this is, it lasts a long time and when the colour does fade away eventually, does so evenly.
A simple quick fix for me make up wise is using a concealer that also doubles as a subtle highlight. For that I always use the YSL Touche Eclat (in shade 1.5,) for its ease of use, longevity and how beautiful it looks on the skin.
I'm a fan of dry shampoo, not only for giving a quick revive to my fringe but for adding volume and texture. I've recently been trying out this one from Aussie and I've got to say - it also has INCREDIBLE hold. You can skip hairspray, just use this. Amazing. They also do one in a smaller size so a great handbag staple.
Cicaplast Baume B5 is not only a bedside necessity, I also keep a smaller size in my bag. It's great for hands but also notoriously dry patches like elbows and knees. I also like to use it when my cheeks (on my face, don't go there) are particularly dry, especially in winter. It's particularly handy during cold/flu season - a little on chapped lips or noses is a skin saver, for sure.
What are your favourite quick fix products?