Home Cosmetic Science Talk Formulating General tkb cap 2 Preservative Expiry

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  • tkb cap 2 Preservative Expiry

    Posted by saraahsan on December 1, 2020 at 1:03 am

    hi wonderful people here

    i am using tkb cap 2 in lipstick and it is all going well. my question is i bought this preservative last year in december 2019. i dont know its expiry but i think one year is its expiry so it will expire this month December 2020. 

    can i use this preservative now? should i need to buy new one or can i still use this month. any one have knowledge about tkb preservative plz guide 

    saraahsan replied 4 years ago 3 Members · 8 Replies
  • 8 Replies
  • PhilGeis

    Member
    December 1, 2020 at 2:24 pm

    Ask TKB for an ex. date.  If they can’t/won’t respond, do not use their products.
    Are you sure you need a preservative in a lipstick?

  • saraahsan

    Member
    December 1, 2020 at 5:43 pm

    PhilGeis said:

    Ask TKB for an ex. date.  If they can’t/won’t respond, do not use their products.
    Are you sure you need a preservative in a lipstick?

    yes actually i sell them so i add lip safe preservative in my Lipstick formula. expiry was one year. i bought in last December..so i wanted to ask can i still add that preservative as December is just started or i should buy new one 

  • PhilGeis

    Member
    December 1, 2020 at 6:34 pm

    Sale does not require preservative per se.  Is it  classic wax based product? 

    Re. TKB, think the exp would be for the material meeting its own spec - so within that period it should be as intended.

  • saraahsan

    Member
    December 2, 2020 at 9:52 am

    PhilGeis said:

    Sale does not require preservative per se.  Is it  classic wax based product? 

    Re. TKB, think the exp would be for the material meeting its own spec - so within that period it should be as intended.

    yes i make wax and oil based lipstick. mostly when we see market bought lipstick ingredients they also add preservatives like parabens on list. 

    i have tocopherol as well. i think that is enough to add in formula so my oils dont go rancid. am i right? 
  • Zara

    Member
    December 2, 2020 at 10:17 am

    I always use them up to the expiry date. I don’t believe 100% oil/wax products needs preservatives. I was making lip balms a few tears ago and never added one, just vitamin E and Rosemary extract. 

  • PhilGeis

    Member
    December 2, 2020 at 12:15 pm

    Tocopherol is a good idea.  Some use parabens to prevent mold.   TKB Cap 2 (glycols and phenoxyethanol) would be good vs bacteria esp. Gram negative bacteria.  A wax based lipstick is not much of a bacterial risk, and those are are poor vs fungi. 
    Perhaps consider just a paraben.

  • saraahsan

    Member
    December 2, 2020 at 10:25 pm

    Zara said:

    I always use them up to the expiry date. I don’t believe 100% oil/wax products needs preservatives. I was making lip balms a few tears ago and never added one, just vitamin E and Rosemary extract. 

    thank you dear for guidance i think i should add vitamin e only

  • saraahsan

    Member
    December 2, 2020 at 10:26 pm

    PhilGeis said:

    Tocopherol is a good idea.  Some use parabens to prevent mold.   TKB Cap 2 (glycols and phenoxyethanol) would be good vs bacteria esp. Gram negative bacteria.  A wax based lipstick is not much of a bacterial risk, and those are are poor vs fungi. 
    Perhaps consider just a paraben.

    thank you so much for guidance i will keep these points in mind and i will switch to vitamin e tocopherol only. will stop using preservative in lipstick

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