Hello
BEMT can block UV light, cover both UVA/. UVB, but because the substance is a powder that require complete solubility in the formula So it will be effective in sun protection. and dissolved solvents
BEMT is best
Octisalate is very popular. to choose
Octisalate in the formulation to act as a solubility.
BEMT Selection of other oils to dissolve
BEMT in the formulation may not be sufficiently soluble and cause Recrystallize in the formula can cause loss of UV protection. SPF24 / PA+++ recommend
BEMT at 2%,
Octisalate 10%, it is expected that SPF30/PA+++, but the exact value must be sent to the lab for measurement (the company provides service)