I want to emphasize that I am not a doctor or an expert, and my answer is based on some common sense and experience. If you are worried about symptoms, you'd better consult a professional doctor.
So why does your face become obviously black and yellow? There are several possible reasons to consider.
The change of skin color may be caused by allergic reaction. Some ingredients may have an adverse effect on your skin, leading to pigmentation or other related problems. If you find other uncomfortable symptoms after using this product, such as redness, itching, etc., then the possibility of allergic reaction is even greater. In this case, I suggest you stop using this product and consult a dermatologist as soon as possible.
It may also be the product itself. Although Queen Pien Tze Huang Pearl Cream is very popular in the market and has a lot of praise, everyone's skin is unique. Some people are more likely to have adverse reactions to certain ingredients, and everyone's skin is different. Therefore, even if a product is good for others, it may not be suitable for you.
One factor you may need to consider is temperature and seasonal changes. Climate change in different seasons has a great influence on the skin, especially in dry winter or hot summer. If the time you use this product coincides with the change of temperature, it may also be one of the reasons for the change of skin.
I suggest you stop using Queen Pien Tze Huang Pearl Cream and consult a professional doctor. They can evaluate your situation more comprehensively and provide solutions suitable for your skin needs. I also want to remind you to pay attention to daily skin care and moisturizing, choose products suitable for your skin, and avoid relying too much on a single product.
I want to remind you to keep a good mood. Skin problems may bring us trouble and stress, but they can't define our life. Remember to pay attention to inner beauty and health and enjoy life every day. I hope my answer is helpful to you, and I wish you an early solution to the skin color problem!