Results: There was statistically significant effect of intervention in each group on the infant’s weight. Data were analyzed using paired t-test and ANOVA. Baby digital scale of ARN-EBSD-04 was used to measure infant weight. There were 38 infants were selected using purposive sampling, divided into three groups, namely: 1) a group received spa two times per week (12 infants), 2) a group received spa three times per week (13 infants), and 3) a control group. Methods: This study was a quasi-experimental study with non-equivalent control group design. Objective: To determine the effect of baby spa in infant weight in in Bebengan Village, Boja Sub District, Kendal Regency, Central Java, Indonesia. Baby's spa is considered to be able increase infant’s weight. Background: The prevalence of skinny infants in Indonesia is still high.
