Just thinking about the why use the cnd lamp argument. If a nail product used blue light to cure it would you use another lamp that produced a different colour of blue light? They are both blue so shouldn't be a problem surely? Move along the colour spectrum and what if that lamp was producing a blue-green light? Products cure based on the wavelength of the light ... Not the colour. UV lights can be a huge variety of wavelengths and colours. Just as a blue bulb can be a huge variety of colours and wavelengths.
Now to those complaining it's a 60second and not 30second cure why is that a problem? Can you really do an amazing flawless paint in 30seconds? And even if you say you can wouldn't it be great to just be able to take a few extra seconds to make sure it is perfect.
Also, CND Shellac is a premium industry leading product. One of the things that comes with premium products is space and time, people like to feel they get value for money and aren't being rushed out the door. You should be charging a decent price for your CND Shellac service, and that should be reflected in the customer experience.
Also, look at it from a marketing perspective. If you bake a cake and want it done quicker you turn the over up, it may bake it quicker but the result isn't as good. It isn't as evenly baked, it could be burnt on the top or around the edges. Allowing something to bake / cure around the slowly and properly gives a better result and longer lasting finish.
Over a complete treatment the extra 30seconds per step is the equivalent of three minutes per service. If you think you are loosing money by doing this then, like people who say double dipping with waxing costs them too much, I would suggest you look at how much you are charging. Put the price up by a pound or two.
