Sheena the parents provide the sunscreen. I request 30SPF in a spray (not the aerosol). I do a little dance if they all come with the same brand. I have the parents apply the first coat in the morning then I use the same bottle on all of the kids for that day, the next day we move on to the next bottle and so on. If I have someone with sensitive skin I slather them up first from their own bottle. Sometimes we are dealing with first time parents and they don't know the ropes so we can help steer them in the right direction.