It is VERY dangerous to intermix monomer and polymer systems. Especially when you are mixing odourless and non-odourless systems. It may SEEM fine on the outside, but you are putting your client at serious overexposure risks that may not manifest themselves for months after.
You could also be found legally negligent in doing so (which means a client could very easily sue you if they develop a reaction).
It really depends on the powder. If it contains BPO then I would say no, however if they are just pigmented polymer, then it shouldn't really affect the chemical reactions (much in the same way that glitter won't really affect your powder). Saying that, it still can affect your curing. For instance, if 1/2 of your bead it glitter or just pigmented powder, then you are relying on the other half having enough BPO content to ensure a proper cure.
Hope that makes sense
I can't really comment on adding anything to your powders that was not put there by the manufacturer. In the case of extra pigments, I really don't see coloured powders being any more expensive than the powder you are using as a base and with those you at least
know that they will be compatible! Anyhoo...
What I
am saying is that all powders contain various ingredients and levels of ingredients. One very important ingredient with most powders is BPO (yup! Benzoyl Peroxide). BPO is one ingresient that is responsible for controlling the curing of your monomer. Too little means a slower cure time (in some instances a nail that never fully cures!). Too much and you will 'shock cure' the enhancement. This is why mix ratio is an important part of working with your L&P system. The wetter of a mix you use, the less BPO. The drier of a mix you use, the more BPO. This can radically affect the performance (and more importantly) the safety of the application.
When you start intermixing systems, you start intermixing amounts and levels of BPO (as well as other ingredients) so you really don't have a clue of the ratio you should be working at. Each monomer is specifically designed to work with a specific polymer - there are no exceptions. Most of the companies that say their polymer is 'universal' are the same companies that do not have an R&D facility and to me seem more interested in making a quick sale then investigating the reality of the situation. A good example is Moxie liquid - you shouldn't use original SolarNail powders with it, only use Ultra or Perfect Color powders. If powders were universal, why the silly restriction? Because CND have an R&D lab that designs their products and they realise that you can not make a powder that works with all liquids!
I have said it 1,000 times before: If you want the most optimum performance and you want to provide the safest service possible, NEVER intermix systems.
If you like Brand A liquid, use their powder. If you like Brand B powder, use their liquid!!!
The EXACT same thing goes for UV lights (think of the UV light as being the 'BPO' part of your gel application. Too little UV exposure is like working too wet, too much UV exposure is like working too dry).
In my eyes, safety and security for my clients are NEVER negotiable.
