Hello! It depends on the meaning expressed by the trademark as a whole, that is, if the trademark means "the product designated for use by the trademark has whitening function", then the trademark lacks distinctiveness and belongs to the situation stipulated in Article 1 1 of the Trademark Law. For example, "white muscle" and "whitening" are meaningless.

If the trademark does not directly indicate the whitening effect, that is, it does not directly indicate the characteristics and functions of the product, then it is ok to have "white", such as "white clouds", and the word is remarkable.

But whether a trademark can be registered depends not only on whether it is significant, but also on whether there are identical or similar trademarks in advance.

I hope I can help you. If you have any questions, we can discuss them further!