There is a good reason for that – it's the formulation that's unique as well the ingredients. SK -II is the only company to use Pitera as an ingredient to create this iconic product. What exactly is Pitera? Playfully referred to as “Miracle Water” in Asia, it comes with a bucketload of beauty benefits.

It also boasts a shockingly short ingredient list. It contains a very small amount of water and preservative, and more than 90% Pitera™ — a proprietary natural bio ingredient derived from yeast fermentation and made up of more than 50 micronutrients, including vitamins, minerals, organic acids, and amino acids.

This extra helping of hydration means my makeup glides on that much better, too. Finally, when it comes to skincare, I'm quite the liberal user. That said, a 230ml bottle, which I slather on twice daily, lasts a good two to three months.