I purchased this concentrate 3 months ago, i tried to use it tonight but the color is dark yellow like mustard, I read vitamins C oxidate my question is, it is still safe for use under my eyes? And if it got oxidate will still works?
I've been using this product for a year and love it. But I just went to reorder, and there are a number of negative reviews recently. It looks like there has been a formula change. Is this the case, or has there been a quality control issue? I don't want to order if I'll be getting an entirely different product!