Such a good opening to this fragrance...a wonderfully realized citrus in the shape of sharp grapefruit which is spot on...really natural. Then a perfect orange note and clearly defined from the grapefruit this is juicy and exudes the flavour of a ripe orange and that freshly peeled white stuff on the inside...gorgeous. Oh yeah...I love rhubarb but I don't get it here really...perhaps an unsweetened 'green' rhubarb that's still growing?...Flash back is tart and sharp but I wouldn't describe it as smelling of Rhubarb and I've sampled it a few times now. The drydown is almost a little warm and that could be the amber listed here although its more pink pepper (which is strong) vetiver and musk which work perfectly with the fruit. I have gotten excited about a few citruses recently (that's because I've tried some very good ones.) but as a rule I don't get to enthusiastic about them...Olfactive studios Flash back is worth it though. Great opening, nice dry down not complex but delivers simplicity very well, my only minor criticism is that it doesn't last very well...otherwise I'd buy this.