This is consistent with the UV absorption shown above. Besides, much higher SPF values of MCX-MS-E (12.6) than that of MCX-E (8.0) indicates a synergistic enhancement in the UV protection ability for MCX-MS-E. This is attributed to the combination of the sunscreen abilities of MCX and MS as well as to the good dispersion of MCX-MS in the sunscreen cream. Accordingly, the MCX encapsulated into the mesoporous silica matrix exhibited about 57% higher UV protection ability than the free MCX.