All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
It is permissible for your husband to kiss his young daughter on her face and lips as, in principle, he kisses her out of mercy and kindness. You should not have suspicions that he is kissing her out of lust, as this is most unlikely from a righteous father.
In principle, a Muslim is innocent and we should interpret his actions in the best manner. Please refer to Fatwa 90009.
Allaah Knows best.