Stretch marks are the red or purple lines that appear on the skin when the skin is stretched too quickly. Stretch marks are formed due to the tearing of the dermis and epidermis. This can happen due to rapid weight gain, as occurs during pregnancy or obesity, or due to the rapid growth that occurs during puberty. Over a period of time, these stretch marks fade to silvery white color.
Cocoa butter is a vegetable fat which is obtained from cacao bean. Because of its moisturizing property it is vastly used is health and beauty products. It also has a very pleasant scent.
Apply liberal amounts of any commercially available product that contains cocoa butter. Several stretch mark lotions and creams contain cocoa butter. Apply it at least twice a day.
Cocoa butter is a rich moisturizer. It acts as an emollient that can penetrate the epidermis (the outer layer of skin) and reach the dermis (the second layer). It acts as an effective moisturizer deep within the skin and this property may help prevent stretch marks.
But one has to remember that cocoa butter does not have the ability to help skin regenerate. Nor does it help boost the production of collagen. Therefore it likely has no effect on existing stretch marks.
Just in case you develop a skin rash or any other kind of allergic reaction then stop using the cocoa butter cream/lotion immediately and consult your doctor.