Some interesting questions skincarejunkie, so I will try my best to answer these. I am also sorry to learn that you developed an allergy to nail product ingredients.
Ok so in your opinion what should every company including cnd, opi, gelish etc etc have in plain site and easy to find on their website?
Not only my opinion, it is law:
https://www.mitsgriffin.com/is-your-website-legal/
And I know you mentioned companies being able to doctor certain results etc, what's stopping any company from doing this even your own? And how would the general public even know?
There is nothing to stop this happening and mostly no-one would know. However, if a product was later believed to have caused health issues, Trading Standards could have the product analysed. If the ingredients did not match the SDS, then any penalty would most probably be higher. Also because the Directors or Owner had not demonstrated "due diligence" they could also become personally liable.
so just to show you I have attached a screen shot of the disclaimer from Jessica
Adding disclaimers is standard practice in many industries and situations. However, the question would be if a Court accepts "a mistake" as a genuine human error or sees it as a deliberate attempt to sell illegal products. It would be strange, would it not, if the only error on the SDS was that an illegal ingredient was not listed, or the amount of one of the few controlled ingredients in the regulations, had been massively exceeded (i.e. instead of up to 30% HEMA, over 50% HEMA was discovered).
Yes, it is possible to develop allergies with all artificial nail products, even very low risk hypoallergenic products. But products developed in the EU and USA are designed to minimise this risk. So then allergies from these products usually occur because the products are not used
as directed by the manufacturer, for example the NT didn't wear gloves, have adequate ventilation (means a professional dust/vapour filter system or an extraction system that vents air outside), or didn't use the UV lamp recommended by the brand (so product and dust was under cured). Often this is because the NT was not educated by the nail school about this.