The majority of spray tanning solutions are made up of water, this being the largest ingredient in the product, you only have to look at the ingredient listing on the label to see it.
The problem you can get with adding water to solutions is that it not only dilutes the DHA which is the active ingredient but also unbalances the rest of the ingredients in the solution. So whilst when a quick fix is needed, ie if a client is particularly pale and you only have a high percentage DHA solution, it can be diluted with purified water, not your regular tap water, and not cause any harm to your client.
The best way to operate is obviously have a good selection of solutions in stock, even if the least used ones are purchased in smaller quantities, then you won't have to worry about how much to dilute the following time . . . .
As for solutions going green, this is when an artificial colourant is added to the solution to create a brown solution, ie red, yellow and blue mixed together will make brown (good choice of colour for a colourguide for tanning solution . . .) when the red breaks down due to time, air exposure or heat, this will leave the yellow and blue . . . . mixed together these colours will turn green, hence the green solutions!
Personally I preferred to use Tantricks solution which had a natural colourant and then the solution never went green. The best way to test it is drop some solution onto a tissue, if there are artificial colourings in it the tissue will show pinks, blues, yellows and greens!!
Hope this sheds some light and helps!
Mandy x
