Parabens in Cosmetics - Chemists Corner

saraahsan

Member

June 14, 2021 at 8:46 pm

Paprik said:

You would need to conduct some testing to find out.
You are adding 50% actual Tocopherol, I would definitely try to add 1% of actual Tocopherol, therefore 2% of T-50. And see how it goes.

ok thank you so much for guidance

saraahsan

Member

June 14, 2021 at 8:48 pm

abierose said:

Personally, if you’re wanting your lipsticks to be used for longer than a year…or two or three…I would probably include a lip-safe preservative due to the probability of moisture contamination…

yes i am adding tkb cap-2 preservative which is lip safe. just my Lipsticks smells rancid after one year. i need to experiments on antioxidant hopefully issue would be resolved then. thanks all lovely people for guidance means alot

PhilGeis

Member

June 14, 2021 at 11:59 pm

cap2 preser vative - think you’re wasting your money.

Paprik

Member

June 15, 2021 at 2:43 am

Also, add the tocopherol right before pouring it.
Meaning, heat all ingredients, melt everything and wait as long as you can, so the temperature drops, add Toco, mix and pour.

Let us know how it goes.
Do you have an incubator or something? That you could do accelerated testing?

raiyana

Member

June 15, 2021 at 10:37 am

Paprik said:

Are you having problems with syneresis? Looking at your oils, you’re mixing polar and non-polar lipids?

actually that’s just a list of oils that i usually use. it’s not exactly all in one product

saraahsan

Member

June 15, 2021 at 11:14 am

PhilGeis said:

cap2 preser vative - think you’re wasting your money.

ohh what do u recommend then should i complete skip any preservative?

saraahsan

Member

June 15, 2021 at 11:15 am

Paprik said:

Also, add the tocopherol right before pouring it.
Meaning, heat all ingredients, melt everything and wait as long as you can, so the temperature drops, add Toco, mix and pour.

Let us know how it goes.
Do you have an incubator or something? That you could do accelerated testing?

no i dont have. yes i will experiment adding tocopherol in the end as much as temperature go down. hopefully it will work for me

PhilGeis

Member

June 15, 2021 at 12:55 pm

Test your “rancid” product. Unless you find contamination doubt if you need a preservative with that formula.

saraahsan

Member

June 15, 2021 at 7:18 pm

PhilGeis said:

Test your “rancid” product. Unless you find contamination doubt if you need a preservative with that formula.

ok thank you so much dear for guidance

emma1985

Member

June 17, 2021 at 5:24 am

saraahsan said:

Graillotion said:

saraahsan said:

PhilGeis said:

How much water? Have you seen any mold or other microbial contamination?

my Lipsticks are water free. but after one year they start smells rancid my clients want more shelf life. at least 2-3 years

Sounds like you are trying to preserve your oils… You are barking up the wrong tree with parabens…. You need to be looking at antioxidents.

ROE / E / Bisabolol / Oil soluable C….etc..etc.

i am adding vitamin e t-50 for oxidation but they smells rancid after one year. my point is how to resolve this issue so that my Lipsticks stay longer at least 2-3 years

Combine Tocopherol with Rosemary Oleoresin. That’s what I do with a lot of my raw ingredients and some of my emulsions.

emma1985

Member

June 17, 2021 at 5:28 am

raiyana said:

I dont make lipsticks, but i do make diy cleansing balms and cleansing oil for my friends and family. Water free formula.

I used to have issues like this but now my cleansing balms dont go rancid as fast. The one i made 2 years ago still smell okay.

What i did, i changed most of my plant oils to synthetic ingredients. The products mostly made of:
Caprylic capric triglyceride
Mineral oil
C12-15 Alkyl benzoate
Isododecane
Some sunflower oil and castor oil
Other plant oils (i limit to 1% max)
BHT as antioxadant at 0.1%
Fragrance and essential oils (max 0.05%)
For natural wax, i only use white beeswax

I dont use preservatives as long as the product is kept away from water and stored properly (not in the bathroom!) Never had any mold. But my “clients” are just friends and family and i always remind them to keep the products dry.

Not to derail the discussion, but I’m wondering if you have any issues with syneresis? (Precipitation of oils due to non-compatible polarity.) I ask because isododecane is highly non-polar, whereas some of your other ingredients are polar (like sunflower seed oil.)

I’ve recently started experimenting with Rice Bran Wax as it is said to prevent syneresis, and it’s going well so far!

I’m interested in trying microcrystalline wax as well, right now I’m using emulsifying waxes, Rice Bran Wax, Cetyl Alcohol and Stearic Acid. Are you happy with the microcrystalline wax?

ETA. Sorry, I see someone already asked about syneresis LoL. Ignore.

saraahsan

Member

June 17, 2021 at 9:03 am

emma1985 said:

saraahsan said:

Graillotion said:

saraahsan said:

PhilGeis said:

How much water? Have you seen any mold or other microbial contamination?

my Lipsticks are water free. but after one year they start smells rancid my clients want more shelf life. at least 2-3 years

Sounds like you are trying to preserve your oils… You are barking up the wrong tree with parabens…. You need to be looking at antioxidents.

ROE / E / Bisabolol / Oil soluable C….etc..etc.

i am adding vitamin e t-50 for oxidation but they smells rancid after one year. my point is how to resolve this issue so that my Lipsticks stay longer at least 2-3 years

Combine Tocopherol with Rosemary Oleoresin. That’s what I do with a lot of my raw ingredients and some of my emulsions.

ok i will try rosemary

Paprik

Member

June 17, 2021 at 10:05 pm

emma1985 said:

raiyana said:

I dont make lipsticks, but i do make diy cleansing balms and cleansing oil for my friends and family. Water free formula.

I used to have issues like this but now my cleansing balms dont go rancid as fast. The one i made 2 years ago still smell okay.

What i did, i changed most of my plant oils to synthetic ingredients. The products mostly made of:
Caprylic capric triglyceride
Mineral oil
C12-15 Alkyl benzoate
Isododecane
Some sunflower oil and castor oil
Other plant oils (i limit to 1% max)
BHT as antioxadant at 0.1%
Fragrance and essential oils (max 0.05%)
For natural wax, i only use white beeswax

I dont use preservatives as long as the product is kept away from water and stored properly (not in the bathroom!) Never had any mold. But my “clients” are just friends and family and i always remind them to keep the products dry.

Not to derail the discussion, but I’m wondering if you have any issues with syneresis? (Precipitation of oils due to non-compatible polarity.) I ask because isododecane is highly non-polar, whereas some of your other ingredients are polar (like sunflower seed oil.)

I’ve recently started experimenting with Rice Bran Wax as it is said to prevent syneresis, and it’s going well so far!

I’m interested in trying microcrystalline wax as well, right now I’m using emulsifying waxes, Rice Bran Wax, Cetyl Alcohol and Stearic Acid. Are you happy with the microcrystalline wax?

ETA. Sorry, I see someone already asked about syneresis LoL. Ignore.

I would actually like to have an answer for this So good you asked too!

Devesh327

Member

December 28, 2022 at 11:10 am

I am a color cosmetics manufacturer in India. We have been making bullet lipsticks for mass market consumption for about 7 years now. Our oil phase includes Castor oil & CCTG. I have never encountered rancidity in my products however, adding TBHQ is a standard practice that we have followed since day one. If you can find that chemical, please try it. It is the best antioxidant in my experience. Hope this helps !

saraahsan

Member

January 23, 2023 at 9:20 pm

Devesh327 said:

I am a color cosmetics manufacturer in India. We have been making bullet lipsticks for mass market consumption for about 7 years now. Our oil phase includes Castor oil & CCTG. I have never encountered rancidity in my products however, adding TBHQ is a standard practice that we have followed since day one. If you can find that chemical, please try it. It is the best antioxidant in my experience. Hope this helps !

Hi dear thank you so much for your reply. I think TBHQ is difficult to find. I am gonna add BHT in my lipsticks to avoid rancidity.

saraahsan

Member

January 23, 2023 at 9:22 pm

Devesh327 said:

I am a color cosmetics manufacturer in India. We have been making bullet lipsticks for mass market consumption for about 7 years now. Our oil phase includes Castor oil & CCTG. I have never encountered rancidity in my products however, adding TBHQ is a standard practice that we have followed since day one. If you can find that chemical, please try it. It is the best antioxidant in my experience. Hope this helps !

Can you plz guide when this chemical should be added i mean while melting or in the end before pouring. But i think it is difficult to find this chemical ????