Hello
1. How many percent of the ph modifier will be used to be suitable for the formula
Sorry, the team has no information. Members must test by using alkali to dissolve until complete, then add.
Citric Acid to adjust the pH in the range of about 7 (not necessarily lower than this. )
2. This formula will get how much spf/pa value is less, it doesn't matter because it focuses on frequent injection
because nowadays The company's SPF/PA meter is currently being shipped back to the US for upgrades to the latest measurement standards. Therefore, there is no test to measure the value. This
DPDT but preliminary
DPDT can protect against UVA. At a good level, the SPF/PA is definitely not low. But there is a limitation, which will be the answer in the last question of the members.
3. Is this water spray formula really effective in sun protection? because of the sun To be effective, the product texture has a great effect
That's right, the texture of the formula has a great effect on the sunscreen performance. It can actually protect against sunblock, but it's very limited, namely
not being waterproof, which means The age of the formula on the skin It is quite low because even just sweat can be erased/washed. sunscreen performance out of the skin If used to direct light to measure SPF/PA as usual, it will be able to see quite a bit. but in practice There are restrictions on Sticking on the skin a lot for reasons that I have informed you.