[nshu_14]

Thank you so much for your answers. Since I only have this type of isethionate in the lab. But I read that APGs can help with their solubility in water so I tried Lauryl glucoside and it could dissolve and make a transparent clear liquid. However, I am curious about its stability.

For the stability, do we usually conduct 7-days accelerated test at 50 degrees in addition to 3 months stability at RT and 45degrees?

[nshu_14]

Hii @MaidenOrangeBlossom Thank you for your response.

I am actually looking for an answer to this question: what is the lipid to emulsifier ratio one should consider for the beginning (just a general rule of thumb)?? Somewhere I read emulsifier should be a quarter to oils/waxes and somewhere it says something different. Would you please elaborate on this?

Emulsifier: Yes thats my sole emulsifier. Would you please also suggest which direction to take from here as I am getting lost. 🙁 Also I have different fatty alcohols so I am tempted to use more than one (stearyl alcohol, glyceryl stearate, cetyl alcohol, cetearyl alcohol, stearic acid). What do you suggest how to make a choice?

Cool down phase: its not 2,3% , by mistake its 2.3% in total for the whole cool down phase. so 1.5% for preservative, 0.3% perfume and 0.5% vit. E I am using.

[nshu_14]

Ooops, sorry I wrote the abbreviation.

Because I am curious about glucosides in emulsification and I only have those available as a “greener” option.

• This reply was modified 2 days, 6 hours ago by  nshu_14.

[nshu_14]

Thank you @ketchito. Your comments are always helpful. I will give a try to your suggestions. Do you think increasing the emulsifier to more than 5% active content would help further?

[nshu_14]

Thank you for your answer. I am using APG as the only emulsifier. I would like to test if our APG sole is enough for the emulsion.

[nshu_14]

Increasing oil and shea butter will not lead to a very sticky/oily feeling post-application??

[nshu_14]

Thank you @Richard I dont have Glyceryl stearate NSE, can Glyceryl stearate do the job? Also, if I include Glyceryl stearate 0,6%, will it act like a stabiliser? and shall I remove any of the fatty alcohols?

[nshu_14]

Thank you @ketchito I tried but that didn’t work initially.

I presumed the bubbles were arising from the water phase (water+glycerin_xanthan gum) <font face=”inherit”>mainly and gel network as you mentioned was making it harder to be out from the system. So, I let the water phase sit for 2 days (significantly reduced bubbles) and added to my oil phase, followed by your further suggestions on mixing which then helped. Thank you for your </font>valuable<font face=”inherit”> notes.</font>

[nshu_14]

Thank you @ketchito 🙂 I will try the neutralisation of stearic acid. Could you please also help me with the bubbles issue? I see buubles on the spatual when I pour my lotion, its not very smooth looking. Do you think its coming from bubbles in Water + glycerin + xanthan gum? I am using Turrax homogenizer. Really appreciate your kind response. Thank you

[nshu_14]

Thank you. Since I am really new to the cosmetic formulation world, would you please elaborate on this, how can I do it? Neutralise prior to addition of stearic acid in the formulation or during addition of stearic acid, I instantly neutralise in a subsequent step? My apologies if its a very basic question. Its a learning platform and helpful for beginners like me. Really appreciate everyone’s insights 🙂

[nshu_14]

Thank you so much MaidenOrange Blossom for your detailed points on my formulation query.

I will accommodate your notes. Will keep everyone posted on my progress with the lotion.

[nshu_14]

Hii @hollis-whyte,

I managed to obtain a good viscosity by reducing xanthan gum and increasing wax, however, now I have another issue of airy-like bubbles or seems like oil droplets, not so sure about it. Do you have any idea how I can resolve this part? I am using high shear for homogenising.

For fragrance, I am now using 0.3% which seems to be just on the limit.

[nshu_14]

Thanks though, you are right indeed. I will add in more primary emulsifiers which may balance this oil part. Looking into the natural options. If you have some in mind , please feel free to suggest.

[nshu_14]

Thank you for your insights. I have glyceryl stearate. could this work as one of the main emulsifier?

I will reduce perfume to half (0,3%). Do you think is it still on the high end?

I bring down also XG to 0,4%

For preservative part, do you have any recommendation? Besides phenoxyethanol (I cannot use it).

Much appreciate your answers. Thank you.

[nshu_14]

Thank you for your insights.

[nshu_14]

Ok, I understood, thank you. So for now, we haven’t thought of packaging. Would your suggestions on this?

[nshu_14]

pH : 5.50-5.60. Would you please share how packaging is an important deciding factor for preservative selection?

[nshu_14]

I am going to use APGs, glycerine, a thickener and preservative. Do you have any suggestions on additional functional ingredient that I can use? Also the suggestion on preservative system ? Many thanks 🙂

[nshu_14]

Hii Paprik, thank you for the recommendation. I tried CAPB also, but precipitation occurred. Had no luck with it. Thanks though.

[nshu_14]

Thank you @richard I tried your recommendation. Solution is quite clear, no precipitation. I will do the makeup removal efficacy soon. Do you have any suggestions on the related tests for makeup remover formulation?

[nshu_14]

No. I also used humectants (glycerin, propylene glycol) and xanthan gum. pH is 5.65. It wasnt easy to dissolve so I heated the water to 50 degrees and then SCI was dissolved. The solution was translucent though.