If you want a beautiful glow in your skin, you'll have to start from the top. In this case it's with Yves Saint Laurent's Top Secrets Instant Moisture Glow. The sleek black tube contains a multi-functional product that straddles the line between makeup and skincare. This clever hybrid hydrates the skin, but also has a blurring and radiance-enhancing effect. Best of all, there are three ways to wear it.

Anja Rubik

Worn alone, it is hydrating enough to give a satiny finish on the skin and will give you that fresh-faced glow if you dare to go completely bare. Great for weekends, or when you're playing sports or heading outdoors.

When you use it before makeup as a primer, it minimises the appearance of imperfections and helps foundation look smoother and last longer. 

Finally this miracle in a tube can also be worn post-makeup. What it does? Applied over foundation, it plumps up the skin and gives it a satiny, glowing effect. It's great for those with dry or stressed skin which is prone to getting patchy, dull and flaky through the day, though we would suggest spot application at areas where you need it. With so many uses, we're stashing one in each purse.

$79. At Yves Saint Laurent Beauté counters and stores