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its a difficult question(for me of course) …

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@pepe salt decreased or increased surface tension of water?

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yes … I dont know :-B

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@belassi I made a hand cream with 940 I dont know but I felt irritant and I didnt like it.

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@markbroussard what about hair? I saw some where pH 4.5 -7 is good

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@Irina tudor

1 quick piece of advice: never add water to an alcohol solution, that’s asking for trouble (due to polarity> solubility issues, most fragrance raw materials are not soluble in water).

Hi Irina, here I have fragrance, water and alcohol. so whats the best way to dissolve fragrance ? how I can mix them to have least amount of HCO?

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@belassi Ethanol has both water loving(oH) and water avoiding(CH₃) groups. so it can dissolve both polar and nonpolar substances.

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is it true that BTMS has more conditioning and detangling effect than BTC?

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uummm lots of comments…
friends Im in vacation I will come after 3days
I really love fragrance discussions

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@belassi another point is that for antidandruff effect the percentage TTO  is 5% like this paper:

http://www.ncbi.nlm.nih.gov/pubmed/12451368 so how 0.1 could be effective?

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@belassi be sure that laureth is milder than luaryl( if it has ammonium or sodium). but my question is that is there any difference between Na and Ammonium in irritatancy or they are same?

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@bobzchemis yesterday I did what you said:

I mixed 3.02g fragrance+ 51g ethanol(  clear solution) then I added 31g water(becomes completly cloudy) . I titrated the batch dropwise(with PEG40HCO) until it clears. The grams was 0.62g. The batch was completly clear yesterday but today its cloudy.I dont know why!!!! maybe it needs more HCO or maybe because of temperature( 21C).

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@perry ok I got it…

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@bobzchemist isnt better to mix the fragrance and ethanol titrate the batch to reach clear solution and then add the water?

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@perry I see linalool in most shampoos and hair mask. its just fragrance and masking?

you know in those formula theres is fragrance except linalool. so whats it role?

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@perry there werent in that table too…and the person who really insults wasnt me.

 

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little know-how of very day today chemicals…

uhum…

[edited by moderator]

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@milliachemist why u use all them in abbreviation form! whats LLP,LO,SE?

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@irinatudor ur advice was so clear and applied …

thanks all of you

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hydroquinon has side effects,maybe this website would be beneficial. Arbutin and retinoid are so effective in whitening.

http://skinwhiteningscience.com/top_skin_whitening_agents.html

 

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@chemicalmatt so the best way is that I add fragrance to my surfactants(here is amphoteric and little anionic) and then add them to other ingredients?

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 @perry <Polysorbate 80 has a lower HLB value 15 versus Polysorbate 20 (HLB 16.5) so that could have something to do with it.> whats relation between HLB and solubilizing? the higher HLB the higher solubility in water, just for this?

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@perry I tried polysorbate 80 and it works very well but why it works and others dont? would u explain it to me?

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u mean PEG40HCO, PG, glycerin and DPG? they dont work…

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thanks for your explanation but this is not my answer…