The diapers Pampers Pure and Pampers Sensitive are both hypoallergenic and gentle diapers that are good for babies with very sensitive skin.
Pampers Pure diapers do not contain any lotions or fragrances which could irritate some babies sensitive skins or give them chemical burns.
The ingredients that make up Pampers Pure diapers and Pampers Sensitive diapers are different which is what the main difference between the Pampers Pure diapers and Pampers Sensitive diapers.
The Pampers Pure Protection diapers are made with premium cotton, soft plant-based fibers, and other thoughtfully selected materials and do not contain any fragrance, lotion or other harsh chemicals.
Pampers Pure Protection diapers do not contain fragrance or lotion.
And I believe that Pampers Sensitive do not contain fragrances either but I can't remember for sure.