Not an expert on nontoxic but read some websites. I have been using SunBum mineral face stick 50 and ThinkBaby 50 for my kids this summer and they have not been burned.
I have a 10, 7 & 5 year old and some books that never get old for all 3 are Don’t Touch the Button books, The Day the Crayons Quit, Don’t Say That Willy Nilly, If I Built A House (also have one for car), A Pig Named Mercy
Oh gosh haha I don’t know. I think if they are 4yrs old before September 1st. Bc isn’t the rule 5yrs old before September 1st for Kindergarten??
So this year pre-k would be 4yrs old before September 1st 2024. So I think you have one more year before Pre-K.