I'm experimenting with different coco glucoside based shampoos using "natural" ingredients and have noticed a strange behaviour at least twice now.
First time I mixed coco glucoside and fresh aloe vera juice 50/50, which resulted in a honey-coloured layer forming where the two materials met, within seconds. I stirred them together, and the whole, previously colourless mix turned a strong golden colour. At the same time, there was a sharp and unpleasant smell, neither the smell of coco glucoside or aloe vera. I had also smelled it when mixing coco glucoside with honey, though there the colour change hadn't been observable for obvious reasons.
Today I mixed lavender hydrosol with coco glucoside at a 3:1 ratio, and again I was getting a light golden colour and that unpleasant scent! All these reactions are happening before adding any other ingredients. Initially I just wrote it off as a one-off reaction due to the fresh aloe vera, but the fact that I've now experienced this smell from three different mixes all containing coco glucoside makes me think the common denominator might be more simple.
Has anyone experienced something similar or has an idea what sort of chemical reaction might be happening? I would really like to understand what is going on.