Formulas 6 and 8 are practically identical in their components as were their SPF values-SPF 14.8 and 16, respectively, as determined by the two independent labs.
Formulas 7 and 10 had practically identical SPFs , 29 and 30.2, respectively, but Formula 7 contained 91% sorbeth 2 hexaoleate whereas formula 10 contained 22.75% of the material.