This can include redness, itching, and burning.The high concentration of Vitamin C in the serum can often be too strong for some people’s skin, causing this issue. To avoid sensitivity, start with a lower concentration and gradually increase it. For oily skin, consider using Mamaearth face wash—it’s a wonderful option.. All skin types can benefit from the numerous vitamins and antioxidants it contains. Mamaearth products designed especially to lessen the appearance of black spots on the face and neck. Many people appreciate Mamaearth Bye Bye Blemishes Face Cream and Mamaearth Face Wash for treating dark spots.READ MORE