As soon as I heard about the concept of this new Clarins Self-Tan, I was immediately excited. It's essentially a concentrated tanning oil which can be mixed in with your existed favourite skincare products for an adjustable glowing tan. I can't believe no-one has come up with this idea before! Instead of waiting for your moisturiser or serum to dry before applying yet another layer of skincare in the form of your self tan, this allows you to create a hybrid skincare product to apply in one layer, with the added benefit of being able to add exactly how much of the tanning ingredient as you like. This is also great for us sensitive skinned folk who find that many face self-tanners contain unwanted ingredients that cause reactions and breakouts - not with this little bottle! I've found that three drops mixed with my nightly moisturiser results in just the subtle glow (not at all orange) that I like, with absolutely no streaks. I love how teeny the bottle is, and that even this tiny amount of product will keep you topped up on tan for a good three months. The dropper device works well, and the screw top lid prevents any worries about spillage. This is one of those really well thought out products that's just pretty much perfect.