[Fekher]

Verifying the solubility of EHT and tunisorb S it will be a problem in dissolving them.

[Fekher]

I should collect maximum of details, especially the opinions of experts then move to trying

[Fekher]

any feedback? @Graillotion @Aniela @MaidenOrangeBlossom

[Fekher]

Even your SPF will be low as predicted will not may reach 30.

[Fekher]

Any help? @Perry44 @ketchito @Cafe33 @chemicalmatt @Abdullah @ozgirl @Graillotion @ngarayeva001 @Aniela @Paprik @This.Formulating.Life

[Fekher]

Formulation seems quite good just may:
1*Three uv filters will not protect as well if they are more ( i know that yours are broad spectrum however all sun screen seen contain more then three filters)
2* Oil phase is more then 40 % so it is really not easy to have stable emulsion .
3* Even with Sepinov EMT 10-0.8 Sepimax , Zen- 0.1 the level of Olivem 1000-1 ,Peg 100 stearate & Glyceryl stearate- 2 seems low .

• This reply was modified 4 weeks ago by  Fekher.

[Fekher]

@mmarr i never recived complaining from EDAT in such level .

[Fekher]

@Perry44 @Pharma @Paprik @ozgirl @Cafe33 @chemicalmatt @grai any help?

[Fekher]

Thanks a lot for your valuables answers.

For emulsion of Neowax165 no i did not use gelling agent . for sensicare c1060 phenoxyethanol effect the viscosity almost but with differents intensity depend on formulation . For shampoo formulation i find piroctone olamine effect also the viscosity of product the point of glyceryl laurate i really i did not get it …

I haven’t time till now to make other samples with neowax 165 just the same formulation using sabowax AE gives higher viscosity.

About the used level of emulsifier you have right however it is not just to stabilise oil but to reach a desired viscosity and texture .

• This reply was modified 2 months, 3 weeks ago by  Fekher.
• This reply was modified 2 months, 3 weeks ago by  Fekher.

[Fekher]

Supposed to be stable same question which emulsfier is used?

[Fekher]

Thanks for sharing I want from experts their prediction about SPF because I trust their expertise (I already make it in spf simulator but I want confirmation from experts)

[Fekher]

Thanks a lot, i’am always searching just to find better, faster reference.

[Fekher]

I meant lipo polymer because hydro ones don’t help a lot in w/o.

[Fekher]

Thanks alot @Aniela very informative just can you explain more cascading emollients or any references you recommend 😊

[Fekher]

1)about glyceryl Laurate I understood your point.

2)Sabowax AE and noewax 165 have not same ingredients so haven’t same I CI

3)“About the used level of emulsifier you have right however it is not just to stabilise oil but to reach a desired viscosity and texture .” it is answer about that (again, in your example, as seems too much emulsifier for 10% oil)

Did I answer for all?

[Fekher]

may @ketchito @Abdullah @Graillotion can help

[Fekher]

i guess you should work on the level of use before then changing your emulsifiers .As i know yours can be fine . Make some researchement for free sunscreen formulations and you will find many emulsifiers systems .

[Fekher]

i don’t think that GMS SE alone can give a stable emulsion .

[Fekher]

Awsome answers . i agree with all said details , just i disagree with :” High concentrations of cetearyl alcohol, for example 5%, in combination with standard emulsifiers such as glyceryl stearate and PEG-100 stearate, often result in products that are waxy, slippery, or slightly soapy to the touch.” May it can lead to what you said depends on the full formulation however in all my formulations it isn’t.

• This reply was modified 4 weeks, 1 day ago by  Fekher.

[Fekher]

@chemicalmatt any other alternatives from sigma i could’nt find what you cited however i find a supplier that has some of sigma’s ingredients .

[Fekher]

Thanks a lot, actually there are a lot of acrylates copolymer do you recommend specific one “my dobt in carbopol Edt 2020”

[Fekher]

No all cellulose are bad in pumping. The problem is not gelling I did with many gelling agent however almost are bad in pumping for brush foaming bottle pump.

[Fekher]

thanks

[Fekher]

thanks

[Fekher]

There is no evidence relation that the more foam the more detergent power.