Cosmetics Formulation Development


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Ask about long-lasting sunscreen.

Postby taeioyou » Sat May 11, 2019 8:26 am

It is a question obtained by mixing according to staff's advice from the formula topic10257.html after the mixing principle has been established. Therefore, questions arise. 1. In the case of using ผงกันแดด with a physical 200 nm type, both TiO2 and ZnO were found. That makes my skin feel very dry. How to fix this so that the skin does not become streaky because สารกันแดด as the formula used. 1. Titanium Dioxide 200nm ................... ..... ..6% 2. Zinc Oxide 200nm ............................. .....5% 3. Silicone Blender (ประสานซิลิโคนหลากชนิด) .3% 4. Silicone Film .................................................. 20% 5. Silicone Gel (Ultra Clear)........ ...................37% 6. Cyclomethicone ........................... .............9% 7. Dimethicone ......................................... ....20% 2. สารกันแดด (powder) as above formula is too much? no because the product texture is not as smooth as the formula used สารกันแดด liquid 3. Titanium Dioxide 200nm .....6% and Zinc Oxide 200nm ......5%, what about spf and pa values? 4.In consumption Silicone Film at 20% rub and still peel off the skin compared to vinyl film 10. % which sticks to the skin better, but the texture is not beautiful and some areas gather clumps (some thick some) uneven Please advise 5. If mixing various types of long-lasting coating film together, namely Silicone Film / Oil Film / vinyl film is there any problem? 6. From the suggestion that if the base is ซิลิโคน should be used Silicone Film would like to know if using Oil Film / vinyl film in base ซิลิโคน can this be done? 7. When adding the long-lasting coating film, it was found that the sunscreen that was long lasting with the glassware that was used to mix a lot was difficult to wash off. Is there a technique to clean it?
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Re: Question about long lasting sunscreen?

Postby taeioyou » Sat May 11, 2019 8:28 am

Additional question number 2, how much silicone/oil do I need to support? ผงกันแดด Yes, because the formula is like the proportion of support. ผงกันแดด will not be enough, creamy texture is not good. and poor spreading
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Re: Question about long lasting sunscreen?

Postby staff » Tue May 14, 2019 7:02 pm

Hello
1. When using ผงกันแดด with a physical 200 nm type, both TiO2 and ZnO found that the skin felt very dry. at all How can I fix this so that my skin doesn't get streaky because สารกันแดด used as a powder [/ quote] The formula must contain emollient (e.g. group LipidSoft or silicone) more non-volatile by replacing emollient can be found in formulas, for example Cyclomethicone
2. สารกันแดด (powder form) in the above formula? because the product texture is not as smooth as the formula used สารกันแดด liquid type
Yes, the solution is probably to reduce some. and add according to item 1
3. Titanium Dioxide 200nm .....6% and Zinc Oxide 200nm ......5% will get the spf and pa approximately
I guess about 30-35, under the condition that the formula can take สารกันแดด these coatings are good. If rubbed and powdered or stains or flakes come off the skin. The actual sun protection measurement may be almost invaluable. because the coating is not good
4.In consumption Silicone Film at 20% rub and still peel off the skin compared to vinyl film 10. % which sticks to the skin better, but the texture is not beautiful and some areas gather clumps (some thick some) uneven Please give me some advice
Suggestion number 1 will help you solve the problem.
5. If mixing various types of long-lasting coating film together, it is Silicone Film / Oil Film / vinyl film is there any problem?
Strongly not recommended. because there will be a problem creating film Because it will become a fight to create a film
6. From the suggestion that if the bass is ซิลิโคน should use Silicone Film would like to know if using Oil Film / vinyl film in base ซิลิโคน can it be done?
can it be done? Actually, there is no such limitation that what kind of bass You have to choose that kind of film, just choosing the same base and film. benefit Is to reduce the use of binders ( Emulsifier / cream maker) because they are already compatible.
7. When adding the long-lasting coating film, it was found that the sunscreen that had been stuck with the glassware that was used a lot was difficult to wash off. Is there a technique for washing?
When washing, do not rinse with water. or hit the water first Use a concentrated dishwashing liquid first and then rinse with water.
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Re: Question about long lasting sunscreen?

Postby taeioyou » Wed May 15, 2019 1:58 pm

Thank you, your answer is very clear. From the above formula, there is a problem of damage, which is a clear liquid floating on the surface. Formula 1 1. Titanium Dioxide 200nm ................... .......6% 2. Zinc Oxide 200nm .... ...............................5% 3. Silicone Blender (ประสานซิลิโคนหลากชนิด) .3% 4. Silicone Film .................. ............................20% 5. Silicone Gel (Ultra Clear)...........................37% 6 . Cyclomethicone .........................................9% 7. Dimethicone ............................ Titanium Dioxide 200nm % Titanium Dioxide 200nm ................... .......6% 2. Zinc Oxide 200nm ...................................5% 3. Silicone Blender (ประสานซิลิโคนหลากชนิด) .3% 4. vinyl Film....................... .........................10% 5. Silicone Gel (Ultra Clear)........................... 36% 6. Cyclomethicone .. ................................................10% 7. Dimethicone ..................... ........................20% 8. Hectorite Gel ...... ................................................10% Formula 3 1. Titanium Dioxide 200nm .....3% liquid 10 % 2. Zinc Oxide 200nm .. ...........3% liquid 10 % 3. Silicone Blender (ประสานซิลิโคนหลากชนิด) .3% 4. vinyl Film.. ............................................10% 5. Silicone Gel (Ultra Clear)............. .............29% 6. Cyclomethicone ................................. .......29% 7. Polyhydroxystearic acid ............................ ..3% Formula 4 (%) Body sunscreen, focusing on not falling off. Does not stick to dark fabrics 1. Isododecane . ...................20 2. Microcrystalline Wax ... .......15 3. Oil Film . .............................20 4. SiliSolve Plus ......................2 5. Silicone Gel .............. ..........5 6. Cyclomethicone ..................6 7. Silicone Blender .. ................3 8.TiO2..liq..10 + TiO 2 powder.....3 9.ZnO...liq..10 + ZnO powder.....3 10. Polyhydroxystearic acid .....3 All 4 formulas are stratified. Please give advice. During this time, I'm going to ask a lot of sunscreen questions. I'm disturbed
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Re: Question about long lasting sunscreen?

Postby staff » Sun May 19, 2019 12:54 am

Hello 1. Silicone Film what type? If so, type Isododecane base is recommended to change to type Cyclomethicone base and formula Emulsifier is not enough, it is recommended to use SiliSolve Plus 1.5% combined with Silicone Blender 3-4% 2. Emulsifier recommended by point 1 , Hectorite Gel provides Select Cyclomethicone Base. There may be a cheaper option for this recipe: Warp Cream Maker 10-15%. You can replace 3,8 and spin all items together. 3. The team thinks it's a problem Emulsifier 4 . This formula has a problem with choosing the type of สารกันแดด If members choose to use TiO2, Liquid ZnO must change the mixing method by mixing these two liquids สารกันแดด together. with Emulsifier , the other type in the formula is SiliSolve Plus together first (cut Silicone Blender out of this formula) Add other ingredients to the recipe. If heat is needed (Because in the formula there is wax), it can be done. When all mixed together This formula must have water in order for Emulsifier to work perfectly. You may try water in the proportion of 20% by: Gradually add water to the recipe. While spinning continuously (don't forget that because the formula contains wax as well, this process of blending water into The water must be heated to a similar temperature) and further recommended. Stabilizer in system formula Water-in-Oil Like this: Magnesium Sulfate 1%
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Re: Question about long lasting sunscreen?

Postby taeioyou » Tue May 21, 2019 4:40 pm

From the 4th formula recommended by the staff SiliSolve Plus and Magnesium Sulfate formulated as follows: Formula 5 (%), body sunscreen, focus on rubbing, not falling off. Does not stick to dark fabrics 1. SiliSolve Plus ....................1.5 2 .MgSO4..............................1 3. Oil Film .......................... ...20 4. Silicone Gel .......... .............30 5.water..................................20.5 6. TiO2..liq..10 + TiO2 powder.....3 7.ZnO...liq..10 + ZnO powder.....3 8. Phenoxyethanol ................1 Mixing process, put 1,3,4,6,7 to heat, gradually pour 2 dissolved with water (same temperature as the non-polar part), blend until combined. After getting the cream, put physical sunscreen powder and blend until dispersed in the formula. From leaving it for 1 day, the cream has not separated layers. But the problem was found after the creamy texture when applied on the skin. It looks like grains of sand. When applied on the skin, it feels like a regular exfoliant. When applied on the skin, it will be seen as small white granules. island on the surface But personally, I think that it is not from wearing Oil Film that's too high because I've done many recipes without any problems. As in the 4th formula above, please give advice on how to fix it. But it is a grain of sand that has arisen since the product was received. It doesn't happen when applying) Thank you.
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Re: Question about long lasting sunscreen?

Postby staff » Sat May 25, 2019 10:04 pm

Hello, I would like to ask the members in the mixing process Magnesium Sulfate 1% + water 20.5% At this stage, is it dissolved until a clear liquid is obtained?
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Re: Question about long lasting sunscreen?

Postby taeioyou » Fri Jun 07, 2019 5:30 pm

Dissolve until a clear liquid is obtained. Dissolved by using a combination of heat.
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Re: Question about long lasting sunscreen?

Postby staff » Sun Jun 09, 2019 7:27 pm

Hello, the problem is caused by too little water, please cut Magnesium Sulfate out of the formula after mixing Set it aside to test its stability. If the formula has stability problems It is recommended to use other helpers instead such as Oil-Fix 1%
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Re: Question about long lasting sunscreen?

Postby taeioyou » Wed Jun 12, 2019 4:39 pm

Dear staff from
The problem is caused by too little water, please cut Magnesium Sulfate out of the formula
I don't think it's because of the low water content because I tried Magnesium Sulfate 1% with other formulas as well, which is only 20% water, same as 1 . Titanium Dioxide 200nm .....3% liquid 10 % 2. Zinc Oxide 200nm .............3% liquid 10 % 3. Silicone Blender (ประสานซิลิโคนหลากชนิด) .3% 4. vinyl Film.................................................. ...10% 5. Silicone Gel (Ultra Clear)..... .....................19% 6. Cyclomethicone ............................... .......18.5% 7. SiliSolve Plus ................... .........................1.5% 8. Phenoxyethanol ................................. ..1% 9.MgSO4................................................. ..........1% 10.water..... ................................................... 20% formula This is not a problem like the formula that asked the question above (about white pills). Please answer. Thank you.
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