L'oreal — L'oreal hydroponic serum turned yellow

I ordered 2 hydroponic serum bcoz I love the product and I'm using it since 3 or 4 months but this time when I open the product it was in yellow
I don't understand why it's in yellow I checked every where it should be normal like water but it's in yellow and the I feel the consistency is also different I'm not feeling that I have applied this serum
I think it's fake product
And I want to report it as a complaint

And I would request you to take action against it and refund my money.