No idea about AS, I have a bottle of Safari Cologne I bought in 1993. There isn't much left but as far as I am concerned it still smells the same as the day I bought it. Still, that was a long time ago so who knows!!! It's been sitting out on my shelf the whole time. No sun, but indirect sun & light bulbs for sure. Some folks seem to get precious about keeping it in glass bottles... plastic might have an effect over time.