@Maggie what store would I buy it from?
Target, Amazon, Walmart. Dr Brown's toothpaste and toothbrush usually come in a set. You can buy an infant finger toothbrush instead too like Frida baby brand but Dr Brown is usually good for infants to toddlers 😊
I use Brush-Baby Teething Toothpaste as it has chamomile to help soothe sore gums (got it at Boots) and have been using the Nutmeg (Morrisons own brand) kids 0-2 toothbrush. I also have the Wisdom step by step toothbrush but haven't used it yet as the morrisons one works well for now.
Dr Brown's