As the others have said, if the client has bashed her nail and it has actually broken her own nail then thats why it is chipped, as her nail underneath has either peeled or chipped itself.
I had a client ring me sat after having her reshellac on friday to say that is chipped.
When she got here she said she was putting her washing in the machine, I asked her if she had banged it which she denied but she blatently had as the nail itself was split and chipped. I advised her that she must have banged it as she was putting the washing in.
I redid her shellac but charged her as it was something that was covered under the 14 day guarentee.
Clients need to be making sure that they follow aftercare advise I.E solar oil, rubber gloves, jewels not tools.
Dont be too disheartened accidents do happen.
Also if the clients nails are not good to start with, peeling chipping, brittle shellac will peel and chip when their own layers of the nail plate peel and chip. Shellac is a hybrid colour coat, not an enhancement product. It will not give weak nails etc etc strength against banging them and abuse. It protects to a degree but its only when people take care and look after them, there is only so much we can advise the clients the rest is upto them.
HTHs
Jen xx