St Tropez Self Tanner Express Mousse Advanced 1 Hour Tan. NEW/Sealed St Tropez Self Tanner Express Mousse Advanced 1 Hour Tan. Perfect travel size. 3.3oz / 100 ML. I have had bottles of St Tropez for up to three years after the batch code expiration and they still worked great! This is only 2 years old. I just did my tanner with a bottle of this with the same batch code and it turned out great.. bought a few too many so figured I’d share the discount with others. Retail is $36 #bronze #glow