Our sunscreen formulation has been extensively tested and received the CANSA Seal of Recognition, to ensure that your little human will be protected against the harsh South African sun. It protects against UVB and UVA rays if liberally applied and reapplied every 2 hours. Remember to put sunscreen on 30 minutes before sun exposure. A note of SPFs: SPF50 protects against 98% of UVB rays and SPF30 against 97% of UVB rays. You need to reapply every 2 hours anyway, so an SPF 30 gives more than sufficient protection against UVB rays.