As Katie said I don’t think there is a sunscreen under 6m. You should keep baby’s skin cover as possible and in the shadow. My first beach day with my baby was when she was 2m but it was in November (I live in Spain so the sun is not as strong but still good for a beach day) so I just brought a tent for her naps, keep her cover with leggins and long sleeve vest and cover with nude line while feeding her. Also brought an umbrella to avoid the sun.
last month
Sunscreen isn’t actually recommended for babies under 6 months
As Katie said I don’t think there is a sunscreen under 6m. You should keep baby’s skin cover as possible and in the shadow. My first beach day with my baby was when she was 2m but it was in November (I live in Spain so the sun is not as strong but still good for a beach day) so I just brought a tent for her naps, keep her cover with leggins and long sleeve vest and cover with nude line while feeding her. Also brought an umbrella to avoid the sun.