Application-defined market taxonomy splits into brain & eye development, immune support, bone & growth support, gastrointestinal comfort, and general well-being, reflecting discrete physiological windows of infancy. Brain & eye development leads with 32 % value share, underpinned by dose-dependent DHA accumulation in cortical tissue during the first 1,000 days. Immune-support skus claim 26 %, propelled by post-pandemic parental willingness to pay for vitamin-D-plus-probiotic combos. Bone & growth, historically 20 %, is stabilising as global rickets incidence falls, whereas gastrointestinal comfort (12 %) is gaining fastest CAGR owing to probiotic drops mitigating infantile colic. General well-being, the residual 10 %, captures multivitamin “insurance” demand, rounding out the application landscape.