There are no studies showing that applying toothpaste to the nipple area promotes larger breasts. Breast size is related to genetic factors, nutritional status and other conditions.
There is no therapeutic effect of applying toothpaste on the nipple area to promote bigger breasts, and this practice is unscientific. And breast size common key factors, and genetic factors, nutritional status related.
If the parents have relatively large breasts, the children of the offspring will also have relatively larger breasts. If during the development of breasts, supplement adequate nutrition, all kinds of food need to eat in moderation, breast development will generally be better, relatively larger. If the nutrition is insufficient, the breasts may develop smaller.
For adults, the development of breasts generally will not have significant changes again. Patients with severe flat chest can consider going to regular hospitals to improve their appearance through surgery and other methods. Unscientific methods such as applying toothpaste are not recommended.