Lactation is a physiological process in which various hormones, especially prolactin and oxytocin, play a role. Methods such as warm showers are preferred because they are easy to apply and have a quick effect, as well as being cost-effective. It increases the amount of milk by showing a direct effect on oxytocin and prolactin hormones in the breastfeeding process that strengthens the bond between mother and baby. It helps to make the breastfeeding process more enjoyable for mother and baby. Guidelines in the literature emphasize that the mother should be psychologically evaluated and that practices that can relax her according to her needs should be applied to increase breastfeeding success. In addition to hormonal regulation, a warm shower improves self-care. In this way, breastfeeding motivation increases. The aim of this study was to investigate the effect of warm showers in the morning and evening in the first 3 postpartum days on the amount of breast milk by shedding light on hormones and lactation process.