Richard
Forum Replies Created
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As a start I would probably look at reducing HMW HA and removing the glycerin and adding some LMW HA. Also consider reducing panthenol if you are using the 100%.
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Like most people already I agree the allantoin solubility is going to be an issue, although I doubt it is the cause for the current sensitivity issues being observed.
I also agree 1% of EO is a very likely candidate.
Plus I also have concerns around the preservative.
I am also interested in knowing what the Hydrosol is-even though it is w/s what else is in it? You could easily test this out by replacing with water. -
Rather than asking what is the cost, perhaps better to ask how long will it take to breakdown a formula. And a first cut breakdown should be able to be done fairly quickly in say an hour or so. But to test it then you have to make it up, say another hour or so (assuming you have all of the ingredients) and then compare it to the benchmark. Perhaps it needs a further sample. So allow another hour or so.
The cost would then be down to amount of time and what someone might charge and that is obviously going to vary quite a bit. -
Pharma said:Maybe have a look at some sample formulations, for example by Kobo.The main difference to you is production methods: they micronise/homogenise (that’s something you can’t do with a coffee grinder) and they press real hard (you’re pressing with probably 2 bar, a bit more if you’re a bodybuilder… they propose about 30 to 60 bar)
.60 bar is when you use your whole body weight to press down 1 square centimetre of powder or you and 8 friends sitting on a 3×3 cm square.I have to agree here that the Kobo pigments are definitely worth looking further into.
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Richard Lawrence
Cosmetic formulator, based in New Zealand.
Contact details: richardjl2020@gmail.com
Whatsapp: +64 21 842008I have been formulating all types of cosmetic products, with almost 20 years in the industry. Most recently, most of my products have been in the natural space, although I have also done FMCG and traditional products.
Although I am based in New Zealand I do travel to various shows around the world. I also have Australian customers who I have not met yet but we have communicated through email, Whatsapp and Zoom.I recently presented a webinar on Stability Testing and the link can be found below.
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I have played around quite a bit with this ingredient and I do like it. I have not subjected it to PET yet as I have had no customers pick up a formulation with it in so far. But generally it doesn’t cause any instability issues in emulsions and I would always use something else with it, perhaps a natural glycol or Lexgard Natural. Although I have not challenged it, I have never had any visible (mould) growth on the surface of my samples. For me, if it is Cosmos certified then I will accept it as natural. One other point I like about it that it can be used up to pH 8 which makes it suitable for mineral based natural sunscreens and natural mascaras.