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@Dirtnap1please let’s respect each other @ngarayeva001 actually if can not fînd any ingredient wich cause the problem really difficult your problem.

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@lopamudra i guess product with borax has better foam because borax is basic ingredient so it reacts with free fatty acids to give better foam but more agressif soap. So it is not evident the better foam the better soap cause adding basic ingredient improve foam but decrease mildness of soap so as conclusion we should find the adequat amount to have mild and good foamer soap at the same time.

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@hanyo28 maybe stiring was not good enough .

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@Jcjc the quantity of surfctants seems too low try to increase the level of SLES and CAPB .

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Thanks @em88

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@duyennguyen actually i faced same thing with a soap made by me and i notice that also transperency increased so my explication that by time saponification advanced and cause the formation of more glycerin wich decrease the viscosity and increase the transperency of soap.

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Thanks for that smart answer @Perry

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you are welcome @Amira actually there are a lot of mild no irritating surfactans and here is the list of four groups of mild no irritating surfactants and you can eliminate soduim ones to find your disered surfactants.

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@em88 what are the incompatibilities with HEC ?

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@Amira the disered product should have conditioner “polyquaterniums” , vegeteble oils as ” olive oil , aragan oil” wich help a lot for keeping healthy hair and even protein or keratin to repair the hair. For surfactants it will be better to use mild ones as you said. The ph of shampoo is also important for hair so it should be between 7 and 5 and it will be better to have slightly acid shampoo .
For soduim free it is clear that shampoo must not have soduim whatever even for the surfactants. 

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@Dustin @Perry what is the best level of HEC can be used in shampoo to give  the best viscosity ?

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@KingRoland78 try to reduce the speed of stiring it helps to minimize bubbles.

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@ferrysetiawan perfume must be liposoluble one.

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you are welcome @Ellacho7

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@Ellacho7 about the level of emulsifier it can be from 5% reaching 15% or more generally 10% is able to give stable emulsion .

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@Das actully the study gives details it is just a curve from the study what i shared about surfactants it is just a blend of only SLES et CAPB.

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Thanks @ngarayeva001 always giving help @Chemist77 @Perry @DAS have you an idea about that ?

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@Gunther  I made the same constatation , but even it seems strange that what experiences gave and the stranger That this study used just SLES as other surfactant with CAPB. So as first impression SLES supposed can not reduce the irritant effect of CAPB However the experiences proved the opposit.

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@nara i guess sucragel can make cold emulsion .

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@deeps88 gives the Lol to  have better help.

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you are welcome @shaujaat

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@shaujaat for sure you just need low level of perfume to have acceptable odor using ethanol or IPA.

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@shaujaat for cost you can decrease the level of IPA or even to replace it with ethanol and about effecacity i already made glass cleaner without vinegar and it works good so you just need to find the adequat levels of each ingredients.

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As @Perry said presevative are not adequat for skin antibacterial effect cause almost are toxic so even in cosmetic formulation must used at the adequat level.

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@shaujaat you don’t need to make vinegar to make glass cleaner you can just use water, isopropanol , preservative , perfume and colorant if you want.