Collagen does not enlarge breasts. The main tissue structure inside the breast is fat, but also connective tissue, mammary ducts and glandular vesicles, collagen does not make the tissue increase, so that the tissue is obviously developed. Breasts in puberty after maturity, the size is relatively fixed, only after a woman is pregnant, due to the role of estrogen, progesterone, lactogen and other hormones, it is possible to increase in size, for the postpartum breastfeeding to make adequate preparations. Some people use inappropriate methods, thinking that eating papaya and dragon fruit can enlarge breasts, in fact, this is a misunderstanding and a wrong concept, because these foods do not increase estrogen, progesterone and lactogen in the body. Collagen can replenish nutrients and help skin health. Breast size is usually closely related to genetics. After birth, a woman’s breasts undergo three situations morphology changes, after birth, up to 2-3 years of age, due to tiny puberty, breasts can appear temporary development. At puberty, the breasts begin to develop under the action of estrogen, and after about four years the girl’s breasts mature, while after puberty is over the size of the breasts is relatively fixed.