I use their auto-bronzant product, which is the lotion (there are also mousse and spray products). Speaking as someone who has always fudged up self-tanning in the past, applying it is fairly foolproof. Undiluted, the colour is very dark, so I'd recommend testing different dilutions on your thigh or somewhere else that won't be visible for a few days. Ignore the warning on the bottle - you CAN use any type of body lotion to dilute it with. Oh, and I find the best time to apply it is about an hour before bed, so you can let it absorb, then let it develop overnight. And don't rub or blend it in - just cover the areas you want tanned - it's meant to look streaky on application.