It's worth building at least a rinse-and-wash into the swim day itself, right at the pool. Not because of anything dramatic — just because chlorine is a chemical, and it's better out than in.
Regular shampoo works fine, but many parents find that a shampoo for kids who swim — one that's designed to help clear chlorine from hair — does a better job in those first post-lesson minutes at the pool: https://littleetoile.com.sg/product/little-etoile-swimprotect-2-in-1-shampoo-body-wash-2-years/
It's a small, practical swap rather than a complicated overhaul of your child's hair care.
The 2-in-1 options are particularly useful for pool bags. One bottle, less weight, quicker process.
