I just submitted this question online to Philosophy.com:

customer (Jane ****) 04/29/2007 01:12 PM
Has this product been reformulated or discontinued?
I tried a sample from Sephora that was yellow in color. When I went to buy it at Bloomingdales a few days later, the tester product was white. I am very sensitive, so I must test new products for a few days before buying. I am trying out the white sample, but now the product comes up as unavailable on your web-site and others. I'm confused. Please advise.
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The Bloomies SA told me that the product had been recently reformulated (and assured me that my yellow sample was not due to oxidation or product breakdown).
I noticed that it has been unavailable for a while through Dr. B's store. I then googled it and the product came up unavailable through Amazon and Philosopy.com. This got me to wondering, "what's the story?" ???

I'll update if and when I get a response.

Jane