Background Wellbeing among postpartum women needs to be assessed. This article aimed to evaluate the effectiveness of photobiomodulation near infrared as a cultural nursing intervention for postpartum women in Indonesia. Methods A research and development study design was undertaken from 2018 to 2020 in three stages to evaluate the effectiveness of photobiomodulation near infrared: a phenomenological study (n=20), a pre-experimental study (n=80) and a quasi-experimental design (n=90). Data were analysed using one-way ANOVA and a Kruskal–Wallis test. Results Three themes emerged from the qualitative study that focused on development tools. Photobiomodulation near infrared was developed to cover postpartum women's needs. Significant statistical differences were found in multiple outcome measures after implementing photobiomodulation near infrared. Conclusions Photobiomodulation near infrared is a promising intervention for postpartum mothers.