Home Cosmetic Science Talk General My Dishwash Colour is fading when I put it in direct sun

  • My Dishwash Colour is fading when I put it in direct sun

    Posted by Rafique on June 10, 2021 at 1:57 am

    Dear expert 
    Need suggestion 
    My formula is

    Selfunic 96  7%
    Sles 70          7%
    Caustic     to ajust ph
    Citric acid  2g/kg
    Color food lime yellow 
    Salt. 20g / kg
    Formaline 1g/kg

    Your help will be appreciated. 

    ketchito replied 2 years, 7 months ago 5 Members · 5 Replies
  • 5 Replies
  • chemicalmatt

    Member
    June 12, 2021 at 3:31 pm

    Food lime yellow? That would be Yellow 5?  

  • ozgirl

    Member
    June 14, 2021 at 11:25 pm
    This is a very common problem and there are three main options for this problem
    1. Change the colour and use a different dye
    2. Put the product in an opaque or amber bottle
    3. Get a UV blocking additive added to your clear PET bottle. This is more expensive than standard bottles. It is done during manufacture of the bottle and minimum order quantities are generally required.
  • Aziz

    Member
    June 16, 2021 at 5:16 pm

    Quality of Sulphonic acid may lead to an unstable product and result in discolouration which I suffered.  

  • Rafique

    Member
    July 23, 2021 at 5:28 am

    I used food color and somebody suggest me pigment color. Can we use it in dishwash
  • ketchito

    Member
    July 23, 2021 at 12:21 pm

    @Rafique If the issue doesn’t show up when you put the product away from UV light and If there’s no pH drift causing the color fade, then add a small amount of a UV absrober (such as Benzophenone-4…0.05% might work). 

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