Tips to “tame” fine baby hair?

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*pic below*

so my 18mo has fine, wavy hair. It looks nice when he comes out of the bath and it’s kinda slicked back, but once it dries it looks crazy! I do like his hair long, but I’m always tempted to cut those ends off (even though I really don’t want to). Any tips? Or products? No man buns or ponytails for us please😂. Thanks!