Avobenzone (parsol 1789)-UVB and significant UVA protection.
It is recommended to use a sunscreen product that provides both UVA AND UVB protection.
Allergic reactions are can be due to PABA, benzophenones and cinnamates; irritation and allergic reactions are more commonly due to the vehicle in which the sunscreen is suspended.
SPF (sun protection factor) refers to the amount of UVB protection, not UVA. SPF of 15-30 is recommended.
Apply sunscreen LIBERALLY 30 minutes before going outside and re-apply every hour or 2 after swimming, perspiring or toweling off. Be sure to cover exposed areas of scalp, ears, tops of feet and neck.
For infants less than 6 months old, the use of shade, protective clothing, car window screens and zinc oxide sun block are the first line of defense. There is no evidence that sunscreens are harmful for infants, but their thin and delicate skin makes for the possibility of irritation and absorption of sun screen components.