I have used the Norvell post-moisturizing spray following sunless spray application (for clients and personally) but I feel the benefit really only lasts until you rinse. Having said that though it does feel and smell nice and for a spa style session it helps to add to the overall tan experience.
I have noticed that solutions primarily with higher concentrations of DHA and alcohol are just more drying and it is best to use a moisturizing body wash AND
moisturizer or maybe it's just not the right
solution for your skin.
I have used the Norvell trigger effect (I think I have the name right) on days after my tan and I love the ease of a spray but generally end up using a regular
moisturizer . Currently (for regular products) I use Ivory Clean & Simple Aloe body wash and the Kirkland Signature Body Lotion Paraben-free and made with 100% Plant Extracts.
I hope that info helps. :)