Product Colour Fading

Formulating

Product Colour Fading

Posted by padech on January 18, 2014 at 3:06 am

Dear Everyone,

I’ve formulate the body cream scrub as the formula referred below. everything look good but one thing, the colour has changed. The original colour is orange but after a few day, the colour has change to be yellowish (red was fade away). Any body know what wrong with this formula.

INCI %W/W

Aqua 66.296

Allantoin 0.300

Glycerine 5.000

Glyceryl Monostearate SE 2.000

Cetostearyl Alcohol 5.000

Stearic Acid 2.000

Oryza sativa (Rice) Bran Oil 5.000

Helianthus annuus (Sunflower) Seed Oil 5.000

Trimethylolpropane Tricaprylate/Tricaprate 3.000

Diethylhexyl Maleate 3.000

Tocopheryl Acetate 0.300

Trisodium Ethlyenediamine Disuccinate 0.200

Bis-PEG-18 Methyl Ether Dimethyl Silane 1.000

Caprylhydroxamic Acid, Caprylyl Glycol, Glycerin 0.500

Potassium Hydroxide 0.200

Fragrance 0.200

CI16255, CI14720 (Red) 0.002

CI19140 (Yellow) 0.002

Polyethylene 1.000

100.000

Look forward for every comment.

Anonymous replied 10 years, 9 months ago 5 Members · 10 Replies
10 Replies

Chemist77

Member
January 18, 2014 at 3:59 am

Try using a color protector, happens all the time with yellows and more so with reds. BASF has Uvinul grades, Symrise has Neo Heliopans. Choose one suitable for water soluble colors (I suppose that’s what you have used) and try again.

Looking at the formula I think that the culprit is the fragrance because I don’t see any color devouring component in the above recipe. Check the pH too of the fresh sample and the sample that has lost/changed the color.
padech

Member
January 18, 2014 at 4:23 am

Thank @milliachemist for your comment. FYI, my colour solution is 0.5% in water and has 0.1% Benzophenone-4 also. Is that enough? and my product has kept in the plastic jar, mean no light or UV effect. The pH of end product is about 6.5 to 7 either colour faded or not faded one.
Chemist77

Member
January 18, 2014 at 4:31 am

Then try making a sample without the fragrance and check. Also in another trial try increasing the quantity of Benz-4 and add an oil soluble one too to the oil phase.

On another note if your plastic jar is opaque then I understand no effect of light or UV.
padech

Member
January 18, 2014 at 5:34 am

Thank @milliachemist, will try.
Bobzchemist

Member
January 18, 2014 at 6:49 pm

Generally speaking, Iron oxide pigments are orders of magnitude more stable than the synthetic colors you’re using.
Chemist77

Member
January 18, 2014 at 9:25 pm

@Robert Good point that, but are you of the opinion that he can get the desired shade or tint with the iron oxides. Don’t you think the scope of producing lively and bright shades gets limited with iron oxides? Appreciate your valuable input.
Bobzchemist

Member
January 19, 2014 at 6:39 pm

Like many other things in cosmetic chemistry, there’s a trade-off. Iron oxide and other inorganic pigment colors do not fade, but they have a limited palette, and are usually muddy and earthy. Organic pigment/dye colors, both natural and synthetic, on the other hand, provide brilliant, clean shades - but extraordinary measures need to be taken to keep them stable and long lasting, and there’s a chance that you never will get there. So, there’s a choice - which aspect is more important to you?
ChemWizard

Member
January 19, 2014 at 11:31 pm

@padech, Benzophenone-4 at pH above 6 turns yellow…you can try lowering your final pH to see if that helps
Bill_Toge

Member
January 21, 2014 at 1:44 pm

try using a different red dye; I’ve found FD&C Red 4 and FD&C Red 40 are pretty robust
Anonymous

Guest
January 31, 2014 at 5:34 am

u can use combination of -TINOGARD TT-0.2 & CIBA FAST H LIQUID-0.2 IN YOUR FORMULATION AND ALSO VITAMIN E

Anonymous