After searching for "whitening cream beyazlatici krem yorumları" (reviews of whitening cream in Turkish), the search results include customer reviews and complaints about various whitening creams. However, there is no information about the ingredients or materials used in these products.

Here are some of the positive and negative comments found in the search results:

Positive comments:

• "I bought it from a cosmetic store before and was very satisfied with it. It whitens and works, so I bought it here because it was affordable."
• "I used it on my sisters recommendation, and even after 3-4 days of use, I saw a lightening in my dark spots. I think it will be more beneficial with regular use."

Negative comments:

• "I ordered it on October 15, 2023, but it still hasnt been shipped. I havent received any notification."
• "I had a bad experience with this product. It caused redness and itching on my skin."

Overall, it is important to note that individual experiences with whitening creams may vary, and it is always recommended to consult a dermatologist before using any new skincare product.