Home Cosmetic Science Talk Formulating Skin goes red and slight burn sensation, what do you think is causing this?

  • Skin goes red and slight burn sensation, what do you think is causing this?

    Posted by nullafulla on January 15, 2020 at 10:33 am

    Hi guys,

    I was hoping someone can tell me what you think might be causing the red/burning skin sensation.

    Water - 74.79%
    EDTA - 0.2%
    Calcium Gluconate - 0.01%
    Sodium Benzoate - 0.25%
    Gluconolactone - 0.3%
    Citric Acid - 0.2%
    sodium dehydroacetate - 0.25%
    Potassium Sorbate - 0.25%
    Salicylic Acid - 0.1%
    Aloe Vera (200x concentrate powder) - 0.1%
    Green Tea Extract - 0.2%
    Cocamidopropyl betaine - 1%
    Allantoin -0.2%
    Emuls Wax - Oliviem 1000 - 2%
    Stearic Acid - 2%
    Cetyl Alcohol - 1.5%
    Sweet almond oil - 2%
    Hemp Seed Oil - 1%
    Vitamin E oil (mixed tocopherols 70%) - 0.5%
    Phenoxyethanol - 0.25%
    Glycerine - 2%
    Xanthan Gum - 0.3%
    Fragrance Oil - 0.5%
    Koalin Clay - 4%
    Panthenol - 0.5%
    Niacimade -2%
    Acai Powder - 4%

    Thanks for you help in advance

    GabyD replied 4 years, 2 months ago 7 Members · 10 Replies
  • 10 Replies
  • OldPerry

    Member
    January 15, 2020 at 1:41 pm

    It could be anything because everyone’s skin has the potential to react to different chemicals differently.

    I’d guess the most likely candidates would be…
    Acai powder
    Phenoxyethanol
    Green tea extract
    Hemp seed oil
    Sweet almond oil
    or any of the other natural ingredients

  • belassi

    Member
    January 15, 2020 at 8:37 pm

    In order of probability:
    1. niacinamide (known for this effect)
    2. potassium sorbate
    3. phenoxyethanol

    And why are you using CAPB in a leave-on skin product?

  • nullafulla

    Member
    January 15, 2020 at 9:45 pm
    Thanks Perry & Belassi for your thoughts & feedback. @Belassi The thought behind including CAPB in small amount (1%) was to thicken and help the masks cleansing effect.
    I do have a feeling it could be the CAPB though, so I’ll do knock out and see how we go.
  • belassi

    Member
    January 15, 2020 at 10:37 pm

    Oh I see. I thought it was a skin cream, I didn’t know it was a mask. I should have realised, with the clay. There’s no bentonite in there is there? That’s bad for redness.

  • nullafulla

    Member
    January 17, 2020 at 10:04 am
    @Belassi Yeah sorry, I thought I mentioned initially it was a mask formula, I should have. No bentonite.
    I knocked the CAPB, redness still occurs. Thinking the  Acai extract next to knock out.
  • GabyD

    Member
    January 19, 2020 at 5:53 am

    I had exactly this problem! It turned out to be the Potassium Sorbate and Sodium Benzoate preservative I was using. The redness and stinging was quite severe.  We had to ditch the entire batch.  

  • Doreen

    Member
    January 19, 2020 at 12:18 pm

    Potassium sorbate gives me flushing symptoms as well. Even at very low concentrations.

    Niacin is also known for giving flushing (niacinamide can hydrolyze to niacin under acidic conditions, although it is said this reaction takes a very long time).

  • czkld

    Member
    February 26, 2020 at 11:10 am

    @GabyD Can you tell me more about it?? Im really curious, I wanted to use that mix

  • LuisJavier

    Member
    February 26, 2020 at 3:00 pm

    Potassium sorbate seems to be quite notorious for redness to the face. I do not know about sodium benzoate.

  • GabyD

    Member
    February 27, 2020 at 12:23 am

    czkld said:

    @GabyD Can you tell me more about it?? Im really curious, I wanted to use that mix

    Many people are sensitive to it. Including myself and my husband, who have never experienced sensitivity before and have two completely different skin types.

    I spoke to Thor extensively about this and they suggested I bring the pH up to 6 or 5.8 at a maximum. That whole batch went mouldy!

    I then discovered that Thor were WRONG and that Potassium Sorbate and Sodium Benzoate don’t work at such a high pH.

    My advice would be to find another preservative.

Log in to reply.