The product in the image is a skincare item called "WHITE B.S.C Black Spot Corrector." It is described as a "MAXI EFFECT CONCENTRATED FORMULA" that contains AHA (Alpha Hydroxy Acid).
Based on similar products with the same name, this type of cream is designed to:
Improve the appearance of skin.
Help repair dark spots and sun damage.
Lighten dark areas of the skin, such as knees, elbows, and knuckles.
Disclaimer: This information is for general knowledge and is not a substitute for professional medical advice. Consult a dermatologist or healthcare