So far I've used this four times, which is enough to have seen a significant difference! You apply this after showering on damp skin, leave it three minutes and then wash it off. It's very simple and the lather it produces allow you to easily see where you've already already applied the product. I find that it has given me a natural, glowy tan that is definitely noticeable. I do have fairly pale skin though, so if you have a medium to dark complexion I'd say that this maybe isn't the product for you.
I would still recommend exfoliating/moisturising in preparation for using this, even though it's only a gradual tan, as I've found I have a couple of darker patches on the backs of my ankles. Other than that, it's given me a gorgeous, completely streak-free tan without the harmful UV rays of the sun! I'd definitely recommend trying it if you're after a natural tan that requires little effort. It's usually £14.50 but is currently on offer at Boots here.
Have you tried the St Tropez Gradual Tan In Shower? What did you think?