Cosmetics Formulation Development


สงสัยเรื่องการละลาย disodium phenyl dibenzimidazole tetrasul

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Suspicion of disodium phenyl dibenzimidazole tetrasul

Postby maigonix » Thu Jun 21, 2018 3:06 pm

Why do you need to dissolve it with alkali, for example Triethanolamine ? Triethanolamine also because DPDT is highly acidic or normal DPDT is difficult to dissolve if used with alkali. will make it easier to dissolve and use Triethanolamine over 20 percent It will not irritate your skin.
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Re: Suspicion of disodium phenyl dibenzimidazole tetr solubility

Postby staff » Mon Jun 25, 2018 6:04 pm

Hello - Usually the developers of sunscreen formulas use Bisdisulizole Disodium or DPDT or this Disodium Phenyl Dibenzimidazole Tetrasulfonate . That will be used at a rate of about 4-5% in the formula, not using up to 10%. - Formula developers often choose to use Triethanolamine together Sodium Hydroxide in order not to use any kind of alkali too high - the formula will be added with acid to adjust the value. The pH should be reduced to no more than or at level 7 to avoid the alkaline formula which can Irritated the skin. - For concerns about Triethanolamine or other alkali that can irritate the skin If the pH is adjusted down to not be alkaline. It will not irritate the skin. Same as the alkaline level.
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Re: Suspicion of disodium phenyl dibenzimidazole tetr solubility

Postby maigonix » Thu Jun 28, 2018 7:34 am

I usually apply sunscreen in the morning but I rarely have a chance to reapply it during the day. If making a water-based sunscreen spray to increase the sun protection value of the skin What proportions will be required from this formula? Rose Petal Water the rest Ensulizole 8% DPTD 5% Triethanolamine ?% Sodium Hydroxide ?% Citric Acid ?% Question 1. How many percent of the ph-modifying agent will be suitable for this formula? It doesn't matter how much spf/pa you get, it doesn't matter because you focus on frequent spraying. 3. Is this water spray-type formula really effective at sun protection? because of the sun To be effective, the product has a great effect.
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Re: Suspicion of disodium phenyl dibenzimidazole tetr solubility

Postby staff » Sun Jul 01, 2018 4:21 pm

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.
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