-
Color fading in Hair oil and Rinse off products
Hello Folks, I observed color fading in Hair oil (contains oil soluble color) as well as in rinse off product (contains water soluble color). I tried UV protectant/color protectant like Benzophenone 3 and 4 but as this protectants work to a certain level but after 7 to 10 days, it started fading. This is due to break down of Chromaphore (colour absorbing bodies in dyes) bond. Please suggest me a better colour protectant for finished good product if available.
-
8 Replies
-
Sodium sulfite?
-
Sodium sulfite usually acts as a reducing bleach, not a colour stabiliser.
UV fading is a very common problem with the soluble (oil/water) colorants approved for use in cosmetic products.
The most reliable answer is to pack in plastic containers which have a UV absorber incorporated into the polymer. Even so, this is not 100% reliable and most colorants will fade in time.
-
@chickenskin sodium sulphite won’t dissolve in oil-based products
@ashish what kind of oil are you using, and which dyes?
in the past I’ve used D&C Violet 2, D&C Yellow 11, D&C Red 17, D&C Green 6 and D&C Red 30 in oil-based products, and never had any problem with fading
also, the only time I’ve ever seen dyes fade as rapidly as 7-10 days at room temperature was in formulas that had strong oxidising or reducing agents
-
If you’re getting this kind of problem then your colours are a bit dodgy. I’d find a better source of approved colours. This kind of thing is quite common. In fact one of my early batches of shampoo changed colour very dramatically from purple to turquoise within seconds of the sun coming out.
-
Ashish I have used some very stable water soluble dyes from Neelikon, you can check the oil soluble part as well with them. I had a specific issue with pink/red (water soluble) and Neelikon was on top in terms of the stability.
-
ok, thanks Chemist77
-
Ashish IIRC it was Lavanya range from them which was specifically stable in my hair gel, kept it out in hot sun for pretty long and it was perfect for my standards.
-
Ok, i will try colors from Neelikon
Log in to reply.