Hi Belinda I tried making acid (lactic and salicylic) serum, using xanthan gum as a thicker. Unfortunately I find xanthan gum really tacky and unpleasant on the skin. What else natural thickeners would you suggest to thicken up acids and would feel nice, smooth and non tacky on the skin. You mentioned sclerotium gum… how is the skin feeling for that specific gum? Thank you
Sclerotium gum is not very tacky at all, it feels really good and can handle a low pH, you will just need a lot more of it to build viscosity. You will find a variety of choices in this workshop: Can I use a different gum: personalcarescience.com.au/Workshops/GumsandPolymerworkshop-4187/ :)
Learn how to formulate with active ingredients, including how to stabilise them in your formulas and check quality/stability with our Certificate in Advanced Cosmetic Science: personalcarescience.com.au/CosmeticScience/CertificateinAdvancedCosmeticScience-478/ or Diploma of Personal Care Formulation: personalcarescience.com.au/CosmeticScience/DiplomaofPersonalCareFormulation-479/
To have a bioavailability of approx. 1% the final pH needs to be around 3. You only need a small amount when it is bioavailable; conversely even if you had 10% at pH of 5, it would be doing nothing.
Liquid form would already be a solution so measurement would not be the same. Learn how to formulate with active ingredients, including how to stabilise them in your formulas and check quality/stability with our Certificate in Advanced Cosmetic Science: personalcarescience.com.au/CosmeticScience/CertificateinAdvancedCosmeticScience-478/ or Diploma of Personal Care Formulation: personalcarescience.com.au/CosmeticScience/DiplomaofPersonalCareFormulation-479/
Ma'am, A Question came to my mind. Please suggest. As you mentioned below pH 3 Salicylic acid bioavailability is 50%. So absorption by skin will be up to 50%. So, In case of shampoo 2% salicylic acid in pH range 4.5 to 5.5 skin range the salicylic acid won't work as an anti dandruff??? E.x. I have seen famous brand shampoo with salicylic acid anti dandruff shampoo claim. Also few natural Preservatives containing salicylic acid won't Preserve the formulation when formulating in pH range of 4.5 to 5.5 ??? Thank you Thank you
For more information on how to test pH, please watch this video: th-cam.com/video/kwvLAK3KauM/w-d-xo.html and to make buffer solutions please watch the end of this video: Beginners cosmetic science lecture 1: th-cam.com/video/s0I7ZsGqUhk/w-d-xo.html You may also find this video useful: Should cosmetics be diluted to test pH: th-cam.com/video/8ehi-7prATM/w-d-xo.html
Stability would be one factor you'd need to formulate to because you need to keep the pH low, you would need to make sure that all other materials are stable at a low pH and chosen to stabilise the very large clay particles at that low pH. We can consult on this for you as a formulation review (if you have the formula almost ready): personalcarescience.com.au/Advice/cosmeticformulation,brandadvice-797/ or develop the whole product for you from scratch: personalcarescience.com.au/userfiles/files/Formulation%20Development%20Brochure.pdf Hope this helps!
Learn how to formulate with active ingredients, including how to stabilise them in your formulas and check quality/stability with our Certificate in Advanced Cosmetic Science: personalcarescience.com.au/CosmeticScience/CertificateinAdvancedCosmeticScience-478/ or Diploma of Personal Care Formulation: personalcarescience.com.au/CosmeticScience/DiplomaofPersonalCareFormulation-479/
Hi Lorisa this is actually one of the biggest problems in this industry - the more is better concept isn't always true, and especially not with acids. First, there are regulatory issues with adding more acids in some cases/some countries. The bigger issue is with the final pH. If you add more acid (if you're allowed from a regulatory standpoint) it just makes it more acid - but if you go much below a pH of 2.85 it become very dangerous to the skin. So what would you do - adjust pH up? If you do that, you are just making a salt out of the acid. ie Acid + Base = salt. So it defeats the purpose. In other words, if you add a suitable amount of acid that is allowed (regulations) and brings your pH down to 3 - 3.5, then it will perform its skin renewal purpose. Adding more acid means extra cost; but it also just means you need to add more base, which means you are just making salt without benefit to the product. I hope this helps. My bigger concern is about ensuring safety though, even without just making expensive salt in the finished product.
Amazing
Thank you for watching!
Amazing information!
Thank you.
Hi Belinda
I tried making acid (lactic and salicylic) serum, using xanthan gum as a thicker. Unfortunately I find xanthan gum really tacky and unpleasant on the skin.
What else natural thickeners would you suggest to thicken up acids and would feel nice, smooth and non tacky on the skin.
You mentioned sclerotium gum… how is the skin feeling for that specific gum?
Thank you
Sclerotium gum is not very tacky at all, it feels really good and can handle a low pH, you will just need a lot more of it to build viscosity. You will find a variety of choices in this workshop: Can I use a different gum: personalcarescience.com.au/Workshops/GumsandPolymerworkshop-4187/ :)
Thank u Ms.Belinda
Re: the Glycolic Solution...
Are we suppose to heat the water???
Hi! Please email us at info@personalcarescience.com.au to receive this FREE formula plus so many more!!
The skins pH is between 4.5 and 6. If the acid needs to be at a low pH then the final pH of the product will be 3?. Is that correct?
Learn how to formulate with active ingredients, including how to stabilise them in your formulas and check quality/stability with our Certificate in Advanced Cosmetic Science: personalcarescience.com.au/CosmeticScience/CertificateinAdvancedCosmeticScience-478/ or Diploma of Personal Care Formulation: personalcarescience.com.au/CosmeticScience/DiplomaofPersonalCareFormulation-479/
If I understand correctly, the final product with 2% salicylic acid must be
To have a bioavailability of approx. 1% the final pH needs to be around 3. You only need a small amount when it is bioavailable; conversely even if you had 10% at pH of 5, it would be doing nothing.
How about when I buy the liquid form of glycolic ? Is the measurement same?
Liquid form would already be a solution so measurement would not be the same. Learn how to formulate with active ingredients, including how to stabilise them in your formulas and check quality/stability with our Certificate in Advanced Cosmetic Science: personalcarescience.com.au/CosmeticScience/CertificateinAdvancedCosmeticScience-478/ or Diploma of Personal Care Formulation: personalcarescience.com.au/CosmeticScience/DiplomaofPersonalCareFormulation-479/
Ma'am,
A Question came to my mind. Please suggest.
As you mentioned below pH 3 Salicylic acid bioavailability is 50%. So absorption by skin will be up to 50%.
So, In case of shampoo 2% salicylic acid in pH range 4.5 to 5.5 skin range the salicylic acid won't work as an anti dandruff???
E.x. I have seen famous brand shampoo with salicylic acid anti dandruff shampoo claim.
Also few natural Preservatives containing salicylic acid won't Preserve the formulation when formulating in pH range of 4.5 to 5.5 ???
Thank you
Thank you
For more information on how to test pH, please watch this video: th-cam.com/video/kwvLAK3KauM/w-d-xo.html and to make buffer solutions please watch the end of this video: Beginners cosmetic science lecture 1: th-cam.com/video/s0I7ZsGqUhk/w-d-xo.html You may also find this video useful: Should cosmetics be diluted to test pH: th-cam.com/video/8ehi-7prATM/w-d-xo.html
Can acids be used in clay mask based products upto 5%, specially glycolic acid? What would be the factors which need to be taken care of?
Stability would be one factor you'd need to formulate to because you need to keep the pH low, you would need to make sure that all other materials are stable at a low pH and chosen to stabilise the very large clay particles at that low pH. We can consult on this for you as a formulation review (if you have the formula almost ready): personalcarescience.com.au/Advice/cosmeticformulation,brandadvice-797/ or develop the whole product for you from scratch: personalcarescience.com.au/userfiles/files/Formulation%20Development%20Brochure.pdf Hope this helps!
How can I make peeling cream containing 3 acids both ( glycolic acid ,lactic acid, salicylic acid)
Learn how to formulate with active ingredients, including how to stabilise them in your formulas and check quality/stability with our Certificate in Advanced Cosmetic Science: personalcarescience.com.au/CosmeticScience/CertificateinAdvancedCosmeticScience-478/ or Diploma of Personal Care Formulation: personalcarescience.com.au/CosmeticScience/DiplomaofPersonalCareFormulation-479/
Should i add preservative if the ph 3 or 3.5? Mine gel is still 3.5 after few days with xanthum gum and glycolic acid?
Yes, where the pH is >3 you will still need preservative - broad spectrum - to protect the formula and consumers during use.
@@theinstituteofpersonalcare6401 thank you so much' you are honest intellectual
can you add in more to make it 10% or 15%?
Hi Lorisa this is actually one of the biggest problems in this industry - the more is better concept isn't always true, and especially not with acids. First, there are regulatory issues with adding more acids in some cases/some countries. The bigger issue is with the final pH. If you add more acid (if you're allowed from a regulatory standpoint) it just makes it more acid - but if you go much below a pH of 2.85 it become very dangerous to the skin. So what would you do - adjust pH up? If you do that, you are just making a salt out of the acid. ie Acid + Base = salt. So it defeats the purpose. In other words, if you add a suitable amount of acid that is allowed (regulations) and brings your pH down to 3 - 3.5, then it will perform its skin renewal purpose. Adding more acid means extra cost; but it also just means you need to add more base, which means you are just making salt without benefit to the product. I hope this helps. My bigger concern is about ensuring safety though, even without just making expensive salt in the finished product.