Hello, **** I would like to ask how the formula below has been mixed before, do I need to use heat or not? SPF Protect Ultra II 5% [ สารกันแดด ] Silk Mica Powder 10% [foundation powder helps conceal] Cyclomethicone 7% [ emollient Help spread ผงกันแดด and powder foundation] Titanium Dioxide 200nm Eas...
